NFL Refs: What It Takes to Be One

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NFL Refs: What It Takes to Be One         A labor deal was reached and veteran refs will return to the NFL. Learn how they make a difference in a game. Read More WATCH VIDEO: Football Helmets Detect Concussions New padding in football helmets doesn't just protect players' heads better, it can prevent serious injury. The Poodle and Other Beautiful Moths         In honor of the discovery of the poodle moth, we bring you some of the most beautiful (and coolest) moths from around the world. Read More WATCH VIDEO: Monarch Butterfly Fast Facts What do 4th graders know about butterflies? A lot, it turns out. Ancient Buddha Carved From Meteorite         A hefty Buddha statue brought to Europe by the Nazis was carved from a meteorite that fell 15,000 years ago along the Siberia-Mongolia border. Read More WATCH VIDEO: Quick-Rusting Meteorites Iron meteorites are particularly sensitive to even the slightest bit of moisture - including the touch of a finger. Male DNA Found in Brains of Women         If you're a woman who has been pregnant with a boy, you may have male DNA permanently in your body. Read More WATCH VIDEO: Pink and Blue Why is the color pink the default color for girls, and blue almost always associated with boys? From Our Sponsor At Discovery we value your privacy. If you would like to be removed from Discovery News emails like this, please click here to our subscription center, where you can manage your account. We recently updated our privacy policy. This policy is effective as of 10/30/07. To see new policy click here . Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © 2010 Discovery Communications, LLC