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When speed is everything and light marks the universe's speed limit, lasers are bound to be the answer. At least, that's what NASA and a bunch of Wall Street types are betting on.

How Gene Doping Works

science.howstuffworks.com/life/genetic/gene-doping.htm

In gene doping, athletes would modify their genes to perform better in sports. Learn why gene doping isn't acceptable but gene therapy is.

10 Most Famous Nurses in History

health.howstuffworks.com/medicine/healthcare/10-most-famous-nurses-in-history.htm

Do you know some of the most famous nurses in history? Take a look at 10 of the most famous nurses in history that pioneered the modern nursing field.

How Did Benedict Arnold Become America's Most Infamous Traitor?

history.howstuffworks.com/historical-figures/benedict-arnold.htm

Revolutionary War turncoat Benedict Arnold is one of the most reviled figures in American history. But what did he do to deserve this ignominious fate?

How A Fetus Grows

health.howstuffworks.com/pregnancy-and-parenting/pregnancy/fetal-development/how-a-fetus-grows.htm

The fetus grows from an embryo into a baby ready for birth. Read how a fetus grows

How to Protect Skin from Pollution

health.howstuffworks.com/skin-care/beauty/skin-and-lifestyle/protect-skin-from-pollution.htm

Want to know how to protect skin from pollution? Visit HowStuffWorks to learn how to protect skin from pollution.

How Christmas Works

people.howstuffworks.com/culture-traditions/holidays-christmas/christmas.htm

Christmas is celebrated by hundreds of millions of people around the world each year. But what do presents, three wise men and Jesus have to do with each other anyway?