5 Reasons the Sochi Olympics Could Be a Disaster

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5 Reasons the Sochi Olympics Could Be a Disaster         The most expensive Olympics in history is not necessarily going to be the most successful. Read More WATCH VIDEO: First BMX Triple Backflip Explained Find out how Jed Mildon prepared for the record-breaking feat. Cassini Photographs Saturn's Stunning Hexagon         NASA's Cassini spacecraft captures a beautiful portrait of the ringed gas giant Saturn. Read More WATCH VIDEO: Hubble Captures Saturn's Aurorae Astronomers release movies of Saturn's northern and southern lights. Device Lets You Hear Without Being Heard         Surveillance agencies could use the technology for one-way communication. Read More WATCH VIDEO: Why Koalas Sound Like Barry White You'd think koalas would sound as cute as they look. But, oh no ... the sound they make is nothing like what you'd expect. The Sperm Struggle Is Real: Video         What is that sperm's journey like, and does sperm have an overall strategy? 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 © 2013 Discovery Communications, LLC