Many Sharks Much Older Than Previously Thought

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Many Sharks Much Older Than Previously Thought         Nuclear bomb testing from the '50s and '60s had one perk: It's enabling scientists now to learn that many sharks are much older. Read More WATCH VIDEO: What Would Happen If Sharks Disappeared? Shark populations worldwide are under enormous pressure due to overfishing. New Nazca Lines Found in Peruvian Desert         A sandstorm exposes undiscovered geoglyphs near the mysterious Nazca rock lines. Read More WATCH VIDEO: Ancient Etruscan House Discovered  Italian archaeologists uncover an intact Etruscan house, which may shed light on the mysterious pre-Roman civilization. Ukraine Reviving Retro Drones to Spy on Rebels         In their effort to spy on Russia-backed rebels, Ukraine forces dig out old Soviet drones that use gyroscopes, film and parachutes. Read More WATCH VIDEO: Drones Are the New Delivery Service You hear the word "drone," you think military. But no more! Drones could soon be synonymous with package delivery. What Is ISIS?         While clearly it's a terrorist organization, things get more complicated, and frightening, once you know more about it. Watch Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! Follow us @Discovery_News. 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 © 2014 Discovery Communications, LLC