Some people write with their right hand, others write with their left. Haveyou ever wondered about people that can write with both hands? These people are known as ambidextrous.

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Did you know that North American women have used tampons since the 1930s? Ever wondered what they're made of now and what they were made of back then…or even earlier?

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Recent allegations in the British Medical Journal claim that a 1998 research paper, which led to widespread public concern about a potential link between the measles, mumps and rubella (MMR) vaccination and autism, was an "elaborate fraud".

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For some young partygoers, mixing energy drinks with alcohol is becoming increasingly popular. But, have you ever stopped to think about how the combination of energy drinks and alcohol actually affects the body?

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Estrogen, the “female” hormone, is a steroid molecule important for reproduction.

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 Cracking your knuckles sounds like it would be bad for you … but does it really lead to arthritis when you get older?

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As far as vacation souvenirs go, bed bugs suck — literally. Infestations of these blood-sucking insects are on the rise, and they can easily hitch a ride home in your luggage. Here’s a crash course in bed bug biology and some tips.

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Your body is made up cells that reproduce almost endlessly on their own, so why don’t you live forever? Well, the answer to that question is still not fully understood and even what we do know is incredibly complicated.

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While everyone agrees the climate is changing, some suggest recent changes are a result of natural weather cycles. The majority of scientific experts believe the changes aren't occuring at a natural rate and it's our fault. So what's the deal?

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