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Dangers of climate change: lack of water can lead to war
Climate change leads to higher temperatures. Higher temperatures lead to melting glaciers, so snowmelt-based water supplies decrease. Climate change also leads to more irregular rainfalls rather than the more sustained and regularized patterns that make it easy to store and irrigate crops. In the Middle East and North Africa, the world's most water-stressed region, per capita water supplies were expected to halve by 2050 even in the absence of global climate change, having effects on an increasing population. The effects on agriculture will be unpredictable but unpleasant.
Water is basic. When there's not enough of it, people die. When there's not enough to keep crops properly irrigated, there's famine. So it's not a big shock that when water decreases, conflict over it increases. Or to put it more simply, a lack of water leads to war. Societies unable to adjust to the new challenges are left with two main options: fight or flee. The former strategy implies securing an increasing share of the diminishing resources -by force if necessary. Obviously, countries would prefer to talk in order to equitably share water access than to fight over such access. It's when talking fails that fighting begins.
As an example, Egypt depends on the Nile for almost its entire water supply. It's not surprising that Egypt has literally threatened to go to war to secure its access to water from the Nile. Egypt is not the only potential ignition point for conflict in the arid Middle East, where over 90 percent of fresh-water crosses international borders.
Countries should place policies that account for the fact that although water is renewable, it is not infinite. Policies can make existing water supplies sufficient, or they can destroy them. Aid donors can do a great deal to help resolve water conflicts. Political leaders must be involved. Water conflicts are solvable technically, but technical resolutions can only be put into place by political compacts.
Water is basic. When there's not enough of it, people die. When there's not enough to keep crops properly irrigated, there's famine. So it's not a big shock that when water decreases, conflict over it increases. Or to put it more simply, a lack of water leads to war. Societies unable to adjust to the new challenges are left with two main options: fight or flee. The former strategy implies securing an increasing share of the diminishing resources -by force if necessary. Obviously, countries would prefer to talk in order to equitably share water access than to fight over such access. It's when talking fails that fighting begins.
As an example, Egypt depends on the Nile for almost its entire water supply. It's not surprising that Egypt has literally threatened to go to war to secure its access to water from the Nile. Egypt is not the only potential ignition point for conflict in the arid Middle East, where over 90 percent of fresh-water crosses international borders.
Countries should place policies that account for the fact that although water is renewable, it is not infinite. Policies can make existing water supplies sufficient, or they can destroy them. Aid donors can do a great deal to help resolve water conflicts. Political leaders must be involved. Water conflicts are solvable technically, but technical resolutions can only be put into place by political compacts.
Meltdown is a warning the world can't afford to ignore
The release of America's satellite images of Arctic sea ice provides unexpected, dramatic new evidence about the dangers of global warning.
These visions of dwindling ice cover confirm that changes in climate in the planet are progressing much faster than originally expected and what happens there is going to have an impact elsewhere in our overheating world, in particular to its rising sea levels.
It is not the actual loss of Arctic sea ice that is in danger, of course. Its melting will add nothing, directly, to rises in sea levels. But its dwindling will almost certainly have a profound knock-on effect mainly on the great ice sheets of Antarctica and Greenland. Without sea ice to support at their edges, these sheets will break apart faster and faster and tip more and more ice into the oceans, once changes have been triggered at their edges, these will be transmitted into the hearts of these great glaciers at fast rates.
And here lies the threat to Earth: The destruction of the ice sheets will feed vast amounts of melt water into oceans and sea-level rises will be constrained to around 20 to 60 centimetres by the end of the century.
That figure now looks uncomfortably optimistic because some scientists put the likely rise at one metre or more by 2100. As a result, low-lying areas, including Florida and the Netherlands will undergo catastrophic flooding, while the Thames estuary could disappear and some cities including London and Portsmouth will need new flood defences.
And that is just the beginning. No matter what we do about carbon dioxide emissions -the key cause of this heating and melting- the world will continue to warm and its sea levels to rise beyond 2100. Reversing global warming will be a very long process. However, we have, if nothing else, been warned.
These visions of dwindling ice cover confirm that changes in climate in the planet are progressing much faster than originally expected and what happens there is going to have an impact elsewhere in our overheating world, in particular to its rising sea levels.
It is not the actual loss of Arctic sea ice that is in danger, of course. Its melting will add nothing, directly, to rises in sea levels. But its dwindling will almost certainly have a profound knock-on effect mainly on the great ice sheets of Antarctica and Greenland. Without sea ice to support at their edges, these sheets will break apart faster and faster and tip more and more ice into the oceans, once changes have been triggered at their edges, these will be transmitted into the hearts of these great glaciers at fast rates.
And here lies the threat to Earth: The destruction of the ice sheets will feed vast amounts of melt water into oceans and sea-level rises will be constrained to around 20 to 60 centimetres by the end of the century.
That figure now looks uncomfortably optimistic because some scientists put the likely rise at one metre or more by 2100. As a result, low-lying areas, including Florida and the Netherlands will undergo catastrophic flooding, while the Thames estuary could disappear and some cities including London and Portsmouth will need new flood defences.
And that is just the beginning. No matter what we do about carbon dioxide emissions -the key cause of this heating and melting- the world will continue to warm and its sea levels to rise beyond 2100. Reversing global warming will be a very long process. However, we have, if nothing else, been warned.
The danger of global melting
An iceberg the size of Luxembourg has broken off from a glacier in Antarctica after being rammed by another giant iceberg in an event that could affect ocean circulation patterns. The iceberg broke off earlier this month from the Mertz Glacier's floating tongue of ice that sticks out into the Southern Ocean. The Mertz glacier iceberg is among the largest recorded for several years. The collision has since halved the size of the tongue. This hasn't been directly linked to climate change but it is related to the natural processes occurring on the ice sheet.
In recent years, the escalating number of massive icebergs breaking free from the continent has raised concerns that temperatures are steadily warming in the Antarctic region.
This happening could affect global ocean circulation. The area is an important zone for the creation of dense, salty water that is a key driver of global ocean circulation. This is produced in part through the rapid production of sea ice that is continually blown to the west. Removal of this tongue of floating ice would reduce the size of that area of open water, which would slow down the rate of salinity input into the ocean. Oceans act like a giant flywheel for the planet's climate by shifting heat around the globe via myriad currents above and below the surface.
As there are only a few areas in the world where this occurs, a slowing of the process would mean less oxygen supplied into the deep currents that feed the oceans. There may be regions of the world's oceans that lose oxygen, and then of course most of the life there will die.
Apart from that the melting of land ice it is already raising sea levels. In some fairly likely scenarios, oceans would rise by meters worldwide with devastating results. A sea level rise of just one metre would displace tens of millions of people in Bangladesh alone.
Tsunamis
A Tsunami is one or a series of waves that occur after an earthquake, sea-quake, volcanic activity, slumps, or asteroid impacts in or near the sea. A mega tsunami is simply a larger occurrence of the phenomena. The energy of a tsunami is constant, a function of its height and speed. Thus, as the wave approaches land, its height increases while its speed decreases. The waves travel at high speed, more or less unnoticed where crossing deep water, but can increase to a height of 30 meters and more as they approach the coastline.
Without the loss of energy, this allows the wave to go ashore making a storm surge seem laughable. These waves are capable of crossing an ocean, toppling large buildings none of which could withstand the force of the wave, equivalent to the speed of a commercial airplane, nor the extreme flooding.
Where would the next Mega Tsunami come from? A volcano named Cumbre Vieja on the island of La Palma in the Canary Islands of North Africa is where geologists suspect the next tsunami could begin. The reason for the concern is that in 1949 during a volcanic eruption part of the island slid into the ocean before ending its descent. Should another large eruption of the Cumbre Vieja occur, the western side of the island is likely to collapse into the Atlantic.
Predicting the next eruption isn't a likely happening; geologists cannot say whether or not the next eruption will be the one to make the island shed its western shore. Not to be pessimistic, but we can't stop tsunamis. Phenomena of this magnitude literally HAVE no way to be diverted. These are naturally occurring events, and next to the impressive force of mother nature, man would not stand much chance.
The only alternative is evacuating when the volcano (Canaries) starts to erupt, possibly giving a few days or weeks warning.
Noise and hearing loss
Basically, noise is unwanted sound. It is a pollutant and a hazard to human health and hearing. In fact, it has been described as the most pervasive pollutant in America.
Noise in our environment affects physical health. Noise also has psychological and social implications and affects our well being and quality of life. Sounds louder than 80 decibels are considered potentially dangerous. Both the amount of noise and the length of time of exposure determine the amount of damage. Hair cells of the inner ear and the hearing nerve can be damaged by an intense brief impulse, like an explosion, or by continuous and/or repeated exposure to noise.
Hearing loss induced by noise is usually gradual and painless, but, unfortunately, permanent. Once destroyed, the hearing nerve and its sensory nerve cells do not regenerate! Don't be fooled by thinking your ears can get used to noise.
Noise not only affects hearing. It affects other parts of the body and body systems. It increases blood pressure and breathing rate, it can cause an upset stomach or ulcer or it can negatively impact a developing fetus, perhaps contributing to premature birth . Noise can also hamper performance of daily tasks, increase fatigue, and cause irritability.
The key word in dealing with noise is prevention! We want to eliminate unwanted noise when we can. Wearing hearing protectors or limiting periods of exposure to noise are good examples of prevention. Dealing with noise and its effects is a personal responsibility, a work-place responsibility, and a community responsibility.
Different firms are working trying to avoid hearing loss. For example, Apple is developing a volume control device for its iPods that would automatically calculate how long a person has been listening and at what volume, before gradually reducing the sound level, all in an effort to protect users' hearing. Also, Apple has released a free software update for some iPods that lets listeners set a maximum volume limit.
Noise in our environment affects physical health. Noise also has psychological and social implications and affects our well being and quality of life. Sounds louder than 80 decibels are considered potentially dangerous. Both the amount of noise and the length of time of exposure determine the amount of damage. Hair cells of the inner ear and the hearing nerve can be damaged by an intense brief impulse, like an explosion, or by continuous and/or repeated exposure to noise.
Hearing loss induced by noise is usually gradual and painless, but, unfortunately, permanent. Once destroyed, the hearing nerve and its sensory nerve cells do not regenerate! Don't be fooled by thinking your ears can get used to noise.
Noise not only affects hearing. It affects other parts of the body and body systems. It increases blood pressure and breathing rate, it can cause an upset stomach or ulcer or it can negatively impact a developing fetus, perhaps contributing to premature birth . Noise can also hamper performance of daily tasks, increase fatigue, and cause irritability.
The key word in dealing with noise is prevention! We want to eliminate unwanted noise when we can. Wearing hearing protectors or limiting periods of exposure to noise are good examples of prevention. Dealing with noise and its effects is a personal responsibility, a work-place responsibility, and a community responsibility.
Different firms are working trying to avoid hearing loss. For example, Apple is developing a volume control device for its iPods that would automatically calculate how long a person has been listening and at what volume, before gradually reducing the sound level, all in an effort to protect users' hearing. Also, Apple has released a free software update for some iPods that lets listeners set a maximum volume limit.
Best heart food
In today's Western society it's much easier, and not to mention quicker, to spend a few dollars at the McDonald's across the street than it is to make a satisfying dinner. As a result, however, our fatfilled diets have brought about an epidemic of heart disease, which has become North America's No. 1 killer. Fortunately over the years, scientists and nutritionists have studied the foods that are good for the heart, and some of these might come as a surprise.
Cutting your risk of heart disease can be achieved with good dietary habits or, as we like to call it, an anti-heart disease diet. The truth is that adding the right foods and avoiding others can keep heart disease at bay.
Oats, for example, belong to a larger category of foods referred to as whole grains. They, in particular, contain a soluble fiber that decreases the total cholesterol in your blood as well as your low-density lipoprotein (LDL) cholesterol. This is important because it is the LDL or "bad" cholesterol that's responsible for heart attacks.
Red wine is cardio-protective. This effect comes from antioxidants found in it. More recent scientific studies have shown that red wine has the ability to relax arteries and, therefore, lower your blood pressure. But although red wine is beneficial for heart health, too much alcohol, especially in the form of excessive drinking, can lead to trouble that promotes heart disease.
Healthy eating and drinking require a change in behaviour as much as a change in what we eat or what we do in our daily life. Diet is only one modifiable factor in the development of coronary heart disease, and so we have to remember that regular exercise and smoking cessation should always be incorporated in promoting a healthy lifestyle. It is a balancing act. Exercise, combined with an anti-heart disease diet can help you live longer, feel great and prevent heart attack. How easy is that?
Cutting your risk of heart disease can be achieved with good dietary habits or, as we like to call it, an anti-heart disease diet. The truth is that adding the right foods and avoiding others can keep heart disease at bay.
Oats, for example, belong to a larger category of foods referred to as whole grains. They, in particular, contain a soluble fiber that decreases the total cholesterol in your blood as well as your low-density lipoprotein (LDL) cholesterol. This is important because it is the LDL or "bad" cholesterol that's responsible for heart attacks.
Red wine is cardio-protective. This effect comes from antioxidants found in it. More recent scientific studies have shown that red wine has the ability to relax arteries and, therefore, lower your blood pressure. But although red wine is beneficial for heart health, too much alcohol, especially in the form of excessive drinking, can lead to trouble that promotes heart disease.
Healthy eating and drinking require a change in behaviour as much as a change in what we eat or what we do in our daily life. Diet is only one modifiable factor in the development of coronary heart disease, and so we have to remember that regular exercise and smoking cessation should always be incorporated in promoting a healthy lifestyle. It is a balancing act. Exercise, combined with an anti-heart disease diet can help you live longer, feel great and prevent heart attack. How easy is that?
Equine therapy and social work: A winning combination
One remarkable program that is yielding phenomenal results is therapeutic horseback riding. Research shows this form of therapy works wonders with almost every social work population: children, teens, juvenile delinquents, physically challenged, developmentally delayed, blind, deaf, and all forms of abuse. The explanation for the success rate is simple. A special bond is formed between a child and a horse. Children who have not progressed in a conventional therapeutic setting often excel with therapeutic riding. Children will tell a horse things they would never tell a therapist. A child will share secrets, thoughts, failures, setbacks, wishes, dreams, and goals with a horse. And the horse will never tell anybody. Children know this and, therefore, open up more with horses than with parents, teachers, friends, pastors, and conventional therapists. Children will attempt different physical challenges because they feel the support of the horse underneath them.
Therapeutic riding uses equine-oriented activities for the purpose of contributing positively to the cognitive, physical, emotional, and social well-being of people with disabilities. Over-activity, distractibility, autism, developmental disabilities, learning disabilities, emotional and behavioural disturbances, and anger issues are all appropriate problems for therapeutic riding.
There are two types of therapeutic horsemanship: therapeutic riding and hippotherapy. The difference between the two types is that hippotherapy requires a medical professional, such as a physical, speech, or occupational therapist. Therapeutic riding requires a certified riding instructor.
Horses and humans have a lot in common. First and foremost, the gait of a horse is similar to the gait of a human. The horse's pelvis is identical to a human's, but offset by 90 degrees. When a client rides a horse, this motion simulates walking, and the rider is able to work on balance, posture, breathing, and coordination. A horse also engages the rider's vestibular system, which runs throughout the body and affects functions like alertness, balance, and digestion.
Euthanasia - PAU 2010 La Rioja
The word euthanasia comes from the Greek and means easy death. Euthanasia is considered as the deliberate killing of a person for the benefit of that person. In most cases euthanasia is carried out because the person who dies asks for it, but there are cases called euthanasia where a person can't make such a request. A person who undergoes euthanasia is usually terminally ill, but there are other situations in which some people want euthanasia.
At the heart of the ethical and religious arguments over euthanasia are the different ideas that people have of the meaning and value of human existence, and of whether human beings have the right to decide issues of life and death for themselves. Some people think that euthanasia shouldn't be allowed even if it was morally right, because it would be abused and used as a cover for murder.
So why do people want euthanasia? Most people think unbearable pain is the main reason people seek euthanasia, but some surveys in the USA and the Netherlands showed that less than a third of requests for euthanasia were because of severe pain. And people have to know that it's not euthanasia to give a drug in order to reduce pain, even though the drug causes the patient to die sooner. It is not euthanasia, either, if a patient dies as a result of refusing extraordinary or burdensome medical treatment.
This is because the doctor's intention was to relieve the pain, not to kill the patient. Euthanasia can be carried out either by doing something, such as giving a lethal injection, or by not to do something necessary to keep the person alive (for example failing to keep their feeding tube going).
Terminally ill people can have their quality of life severely damaged by physical conditions such as incontinence, nausea and vomiting, breathlessness, paralysis, difficulty in swallowing.
Psychological factors that cause people to think of euthanasia include depression, fear of loss of control or of dignity, feeling a burden, or dislike of being dependent.
At the heart of the ethical and religious arguments over euthanasia are the different ideas that people have of the meaning and value of human existence, and of whether human beings have the right to decide issues of life and death for themselves. Some people think that euthanasia shouldn't be allowed even if it was morally right, because it would be abused and used as a cover for murder.
So why do people want euthanasia? Most people think unbearable pain is the main reason people seek euthanasia, but some surveys in the USA and the Netherlands showed that less than a third of requests for euthanasia were because of severe pain. And people have to know that it's not euthanasia to give a drug in order to reduce pain, even though the drug causes the patient to die sooner. It is not euthanasia, either, if a patient dies as a result of refusing extraordinary or burdensome medical treatment.
This is because the doctor's intention was to relieve the pain, not to kill the patient. Euthanasia can be carried out either by doing something, such as giving a lethal injection, or by not to do something necessary to keep the person alive (for example failing to keep their feeding tube going).
Terminally ill people can have their quality of life severely damaged by physical conditions such as incontinence, nausea and vomiting, breathlessness, paralysis, difficulty in swallowing.
Psychological factors that cause people to think of euthanasia include depression, fear of loss of control or of dignity, feeling a burden, or dislike of being dependent.
Low cost airlines: a failed business model?
The low cost airline model has been the subject of intense interest and study. The "Southwest effect", basically the drop in fares that occurs when a low-fare airline begins serving an airport that had previously had no low-fare carriers, has become part of the vocabulary of air transportation.
The low cost airline model has served many carriers very well, and has had a profound impact on the airline industry throughout the world, but it has been far from a omnipresent success. There are, in addition, reasons to suspect that the model as we have seen it in the past, will need to change to succeed in a dynamic market and, in the short term, to function well in the depressed macroeconomic environments of 2009.
While the title "low cost" airline is widely used the business models adopted can vary quite considerably between carriers; some for example focus on secondary airports in cities whereas other serve the major airports, some offer no on-line services whereas other do, some have frequent flier programs whereas some do not, etc.
It is clear that low cost airlines have been instrumental on pushing down airfares, opening new markets, and allowing many people to travel by air who could not do so before. But success for a few firms is not the same thing as a successful business model and a business is not successful if the full commercial costs of the system are not born by its users.
Some low cost airlines have enjoyed some financial success by simply avoiding competition but other low cost carriers may enter the market and thus reduce the potential business.
Another aspect to be considered is that low cost airlines are often less than stable in terms of the services that provide individually. They do not provide the range of services that legacy carriers normally offer, or at least not in the base fare. And they only offer a single class of service that simplifies booking and passenger handling.
The low cost airline model has served many carriers very well, and has had a profound impact on the airline industry throughout the world, but it has been far from a omnipresent success. There are, in addition, reasons to suspect that the model as we have seen it in the past, will need to change to succeed in a dynamic market and, in the short term, to function well in the depressed macroeconomic environments of 2009.
While the title "low cost" airline is widely used the business models adopted can vary quite considerably between carriers; some for example focus on secondary airports in cities whereas other serve the major airports, some offer no on-line services whereas other do, some have frequent flier programs whereas some do not, etc.
It is clear that low cost airlines have been instrumental on pushing down airfares, opening new markets, and allowing many people to travel by air who could not do so before. But success for a few firms is not the same thing as a successful business model and a business is not successful if the full commercial costs of the system are not born by its users.
Some low cost airlines have enjoyed some financial success by simply avoiding competition but other low cost carriers may enter the market and thus reduce the potential business.
Another aspect to be considered is that low cost airlines are often less than stable in terms of the services that provide individually. They do not provide the range of services that legacy carriers normally offer, or at least not in the base fare. And they only offer a single class of service that simplifies booking and passenger handling.
Importance of sport in children's lives
No person can be healthy without physical activity. Everybody knows that but still many people don't do sports at all. They start doing something only when they get in trouble with their health or weight. Sports are nothing but good for the children. It provides environment where your children can learn important lessons that they can use in their grown up lives. They learn to work hard in order to win. They learn how to cope with life being unfair and how to continue after failing.
When they are very young, sports should be fun. If this is the impression that they get from doing some sport, they will love it and want to do it. They learn to listen, to stay concentrated, to pick up the rules and many things that help them grow into mentally healthier persons.
Emotional development is a very important thing that sport can help with, when we speak about children. They learn how to cope with winning, losing, with unfairness or simply how to take setbacks in significant progress and trying their best next time.
Team sports are good for socializing, and even more important, for teamwork. There is no better place and way to teach the children what is like to be part of the team and not to think just about themselves. If child wants to win, he or she must help others to do their part of the job in order for all of them to be successful. This lesson is priceless.
Parents should, definitely encourage their children to enjoy some sport and let them try different kinds until they find what they like and what they will enjoy to go to. Their children will become happier children because of the fact that they are having a lot of fun.
Racism and homophobia
Racism has existed throughout human history. It may be defined as the hatred of one person by another -- or the belief that another person is less than human -- because of skin colour, language, customs, place of birth or any factor that supposedly reveals the basic nature of that person. It has influenced wars, slavery, the formation of nations, and legal codes.
The most notorious example of racism by the West has been slavery. Jews are usually seen by anti-Semites as subhuman but also superhuman: cunning, skilled, and powerful. Blacks and others are seen by racists as merely subhuman, more like beasts than men. If the focus of anti-Semitism is evil, the focus of racism is inferiority.
In some ways, homophobia could be treated as another kind of racism. Homophobia is the hatred of homosexuals sometimes leading to acts of violence and expressions of hostility. Homophobia is not confined to any one segment of society, and can be found in people from all walks of life.
Prejudiced views directed at homosexuals often stem from the perception that homosexual activity is immoral. Homophobia makes some people think that they are superior to homosexuals.
Internet is widely used to spread racist ideas. The advancement of digital communication technologies has, however, added a new dimension to this problem by providing individuals and organisations with modern and powerful means to propagate racism and xenophobia. As the Internet ignores territories and has no boundaries, states cannot control it effectively by unilateral national regulation: so what is needed is increased international co-operation.
Also, societies can take steps to avoid racism. Although it is comforting that trade unions have accepted the existence of racism, it is time for trade unions and universities to undertake impact assessments on their respective polices and procedures. It is only through critical self-reflection and a commitment from both university leadership and trade unions to work together that we can have changes that will enable us to develop equal treatment for staff and students.
Obama's background - PAU 2010
Eighty six-year-old Sarah Obama, the US Democratic president Barack Obama's grandmother seems to be his biggest supporter. A day after the Illinois senator formally accepted his party's nomination the elated grandma said she would visit him if he was elected as the President of United States. "It is about give and take if you want to win a battle," the 86-year-old said in her native Luo language. "I stayed up late on Thursday night watching clips of the convention," she added. Sara Obama was the third wife of Obama's paternal grandfather Hussein Onyango Obama. Although not a blood relation, Obama often refers to her as his grandmother.
Obama's candidature has already stirred excitement in Kenya. Kenyan Prime Minister saying his ascent was good for Africa. The Prime Minister is an ethnic Luo, as was Obama's late father. Barack Obama, who was born in the United States, barely knew his Kenyan father who returned to his homeland when Barack was a young boy. However, Obama was given a hero's welcome during his last visit to the rural village in 2006 when he visited his grandmother. Barack Obama's life story has been unconventional from the start. His biography -white mother, African father, a childhood spent in Hawaii and Indonesia, working in one of the nation's poorest communities, studying and teaching at some of America's most prestigious universities- was unlike that of any other presidential candidate.
If his eclectic background has fuelled his extraordinary rise, his foreign-sounding name and race also made his candidacy a tough sell in some corners of America. He has fended off countless rumours that he's Muslim (he's Christian) and this summer, he told the crowd at a Missouri fundraiser that he knew it was "a leap" electing a black man with his name.
Predators on social networks: Sexual predators and child molesters find easy prey
Social networking is all the rage. Various web sites have sprung up for the sole purpose of providing a place for users to express themselves, share with like-minded individuals, discover new things, and communicate with others.
The concept of social networking has also been extended to other areas, providing users with the ability to express their creativity, network, rate their favourite video clips, etc. Also, some sites provide users with the ability to post and share photos and family videos. The bottom line is that social networking is hugely popular and it is big business. Unfortunately, child molesters, sexual predators, and scam artists have discovered that these sites can also be exploited to find victims. MySpace has taken steps and implemented security measures to minimize this problem, but users should still be cautious and aware.
Photo sharing sites are used by thousands of families to post and share family photos. It is possible to restrict access and only let users you identify view the pictures, but many users are proud of their kids and their photographic skills and allow the general public to view the photos as well. Child molesters and sexual deviants can search through these sites and bookmark their favourite photos of young boys and girls.
If you want to avoid being a victim it is good to be cautious. Just because someone claims to like the same music as you, or share a passion for scrapbooking, doesn't mean it is true. These new "friends" are virtual and faceless and you can't completely trust that they are what they say they are. Another good idea is to keep an eye on your profile and be diligent about who you allow to connect with your profile.
Finally, parents who have children that surf the Web and frequent these social networking sites should communicate with their children and make sure that they understand the risks and that they know they can talk to you about suspicious or malicious activity they encounter.
Sleep deprivation can kill you - PAU inglés 2010 resuelto
Many people all over the world suffer from sleep-related breathing disorders. Many of these patients stop breathing hundreds of times every night. This is why the evaluation and treatment of patients with the obstructive sleep apnea syndrome ultimately play an important part of critical care medicine.
In 1900, adults in the United States slept an average of nine hours per night. In 2000, adults slept an average of just seven hours per night. We have not evolved to need less sleep, but we are getting less sleep. In past centuries, our sleep/wake cycle was closely linked to the rotation of the earth. We slept when it was dark and we awoke and worked when it was light. However, with the development and widespread availability of artificial light, we have prolonged our waking hours. Stimulants such as caffeine have also contributed to longer periods of wakefulness.
Deep refreshing sleep is essential for feeling rested and well. If you are not getting enough sleep, this could make you feel very sad and could contribute to significant relationship difficulties.
You undoubtedly are judged at work on a regular basis. Not getting enough sleep will affect your job performance and could contribute to being passed over for promotion or loss of your job.
Obesity is a major problem in the United States. While poor eating habits certainly contribute, lack of sleep is also likely a factor. The hormone leptin has a significant impact on appetite for food.
Increased levels suppress appetite. There is evidence that not getting enough sleep lowers your leptin levels. This results in an increase in appetite and weight gain.
Sleep is essential for our well-being. As we get older, good sleep is often harder to come by. With the aging process, we experience less of the deep sleep known as slow-wave sleep. Combine this with medical problems such as arthritis, reflux, heart and lung disease and you have a recipe for ongoing sleep problems.
Dolphins turn diabetes off and on. Hope for humans?
Bottlenose dolphins have what could be called type 2 diabetes, but unlike humans, the animals are able to turn it off and on -perhaps an evolutionary adaptation to maintain their big brains, new research suggests. Diabetes may have arisen in Ice Age humans for similar reasons, so the newfound dolphin on-off switch may be a key to curing type 2 diabetes in people.
Like humans, dolphins have relatively large brains compared to their body sizes- in fact, dolphins are second only to humans in the ratio between body and brain size.
Scientists know that humans need plenty of a sugar called glucose to keep their brains functioning.
Some researchers think the same might be true for dolphins, since both species send high amounts of glucose through their bloodstreams.
Dolphins, however, primarily eat fish, which are high in protein and low in sugar. To get enough glucose from this diet, dolphins have evolved a mostly harmless form of insulin resistance.
Insulin is a hormone that helps the body turn blood sugar into energy. People with type 2 diabetes either don't make enough insulin or are resistant to its effects. Without insulin to break down glucose, too much sugar builds up in the blood, leading to complications such as glaucoma, nerve damage, arterial disease, and kidney failure.
But unlike people, dolphins can activate their diabetes only when the animals need it -and without the serious side effects. Dolphin diabetes turns on during their short overnight fast and turns off when they have breakfast in the morning.
Not all experts, however, are convinced that dolphins use blood sugar in the same ways that humans do. Even though both species are mammals, dolphins and people have very different metabolisms.
Spain curbs "body image" advertisements on television - PAU 2010 La Rioja resuelto
Spain has stepped up its first fight against what the government sees as forces that push girls into anorexia or bulimia, with the introduction of law banning so-called "cult of the body" advertising on television before the children's watershed hour.
Peddlers of plastic surgery, slimming products and some beauty treatments will not be allowed to be advertised before 10 p.m.
The ban is extended to other advertisers who transmit a message to children that what matters most is how they look, or that their chances of success are linked to the type of body they have. The ban comes in a new broadcasting law that has been approved by the lower chamber of parliament and is reviewed by the upper house.
It states: "Broadcasters cannot carry advertisements for things that encourage the cult of the body and have a negative impact on self-image such as slimming products, surgical procedures and beauty treatments which are based on ideas of social rejection as a result of one's physical image or that success is dependent on factors such as weight or looks."
Spanish legislators decided that the dangers posed by slimming products were worse than those posed by, for example, alcoholic drinks. Wine and other alcoholic drinks can be advertised during children's viewing time - to the disgust of some consumer groups.
It makes no sense that slimming products have been banned when alcohol, which is for adults, has not. Consumer groups also complained that the new law is not powerful enough and there would be enforcement problems. The intentions are great but without sanctions they will be useless, this is the general opinion in Spain.
Is "the Big One" coming?
What would really happen if The Big One came? is a question most of us have wondered. Scientific research has provided sufficient fuel for worry, fear and an abundance of media attention. But is it justified? Is there really much chance that a Big One really will happen on planet earth - in our life time?
Depending on how one defines a Big One, it could be argued that we've already had at least ten Big Ones - with each one of them taking more than a million lives and all in the last 800 years, six of them in less than the last 100 years. Still, few people seem to be aware of these. More than once, I've heard a major national television news report refer to the recent South Asian tsunami disaster as "the world's worst disaster". The truth is there have been quite a few natural disasters along the last century that were even more destructive.
I consider also a disaster that about a hundred thousand or so people die every day around the world, although that is part of the normal life-and-death cycle. Death does more to cause us to reevaluate our lives than anything else. Normally the closer the people are to us, the deeper the impact their death has on our lives. But when something unusual happens above and beyond the normal, we should stop to evaluate the consequences.
Consider the following major natural disasters: volcanic eruptions, blizzards, contactable diseases, earthquakes, floods, famine... in all cases they were certainly violent and destructive. And the results were so devastating and so final to so many people that one could argue: "That was the Big One for the people involved".
LITTLE ice baby is one really COOL babe
The two-month-old baby was saved by quick-thinking doctors and a new treatment involving cold water after her brain was starved of oxygen during birth. And now the little baby is back home with amazed mum and dad. The baby girl was born two weeks early with perinatal asphyxia - an oxygen shortage caused by a blocked blood supply from her mum.
Her heartbeat was so slow, nurses couldn't hear it at first. "A consultant said her chances were slim and if she lived it was 99 per cent certain she'd have brain damage," says her father. Doctors decided the baby had one chance - a cooling technique pioneered at a Hospital in Southampton. It involves swaddling perinatal asphyxia babies in cold water wraps to slow their metabolism to the point of hypothermia - reducing damage to the inflamed brain and helping it recover. But it only works within the first six hours of life - so she was rushed the 12 miles to the hospital. There she was encased for three days in the plastic wraps which kept her at 33.5°C - 3.5 lower than normal body temperature. She was kept on a ventilator and given morphine and blood to keep her going before she was gradually warmed up again.
She then responded well to tests and doctors have told her parents, there is no sign yet of any brain damage. Daddy said: "It's incredible. She's really alert and makes a lot of noise. All the staff who looked after her deserve so much credit." A hospital spokesperson commented: "Perinatal asphyxia is a leading cause of neonatal deaths - but we are seeing evidence that shows baby cooling limits brain injury."
Marriage is good for your health?
It is said that "living together or being married" is what everybody wants, the perfect state for humans. We can make our relationship last longer following some recommendations: common courtesy plays a big role in happy marriages. People who are permanently married are polite to one another. They don't want to hurt one another's feelings, and they don't try to make the other one feel humiliated. People who are married for life are extremely kind to one another.
Arguments are a natural part of any relationship, but cruelty is not. Above all, happily married partners see each other as allies, not as adversaries. You can't be right all the time and married at the same time. If you're always trying to be right and proving your partner is wrong, you've stepped outside the marriage.
To go without sex is to endanger the relationship. If you go without sex, your instincts recognize this person as part of the family but cease to recognize the person as a sex partner. It used to work in the ninth grade. But it doesn't work in the ninth decade.
The great thing about sex is that it ceases to be great, and it becomes funny as time passes but it is always something good and brings us happiness. Humour is vital, but it is vital to be happy, too. A happy marriage is a marriage between two happy people.
You're not going to be in love all the time, but if you want to recapture that magic from when you were in love, be caring. Being loving to your partner makes you feel so good about yourself, it doesn't matter if you're in love or not. The marriage is making you feel good if you are loving in it.
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