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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.