How Fleas Work

See how scientists solved the mystery of a relentless sound coming through the walls of people living near the Florida coast. Learn more about fish mating in this video.

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Most people hate roaches, but these little bugs are the ultimate survivors. Learn what makes cockroaches tick by watching this video from the Discovery Channel.

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The Gila Monster is probably the biggest homemade rocket you've ever seen in your life. Check it out in this video. Brought to you by the Discovery Channel.

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Mosquito control is an important but difficult job. Learn more about the importance of mosquito control with this video from HowStuffWorks.

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These polar bears face an uncertain future on Wrangel Island. Can they survive global warming?

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U.S. researchers have grown a living and beating heart in a lab. Scientists from the University of Minnesota took hearts from dead rats and injected them with heart cells from newborn rats; the hearts then came to life. Video courtesy of Reuters.

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Watch this video about repairing and improving your own genes on HowStuffWorks. Instead of complicated gene therapy, a new pill can fix mutated genes and get them to operate "better." Learn about a gene repair pill in this video from ScienCentral.

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Cloning could potentially replace a lost loved one, though the clone would never be exactly the same as the original person.

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