Ukraine Crisis: Russian Roulette in Space

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Ukraine Crisis: Russian Roulette in Space         Rocky Russian relations could leave U.S. astronauts without rides to the International Space Station. Read More WATCH VIDEO: Gravity: What It's Like for Astronauts in Peril An astronaut explains what would happen if there were a catastrophic collision in space. Lost Years of Sea Turtle Life Uncovered: Photos         Sea turtles hatch from nests and go to sea, where they mysteriously seem to disappear for at least two years. Read More WATCH VIDEO: Millions of Turtles Killed Due to Bycatch Millions of endangered turtles were accidentally killed over the last two decades as a result of global fisheries. Lots of Meat, Cheese in Midlife Linked to Earlier Death         Middle-aged adults would be better off easing up on the chicken and cheese, a study finds. Read More WATCH VIDEO: Why Junk Food Is Addictive Junk food works on our brain like a drug -- and that's no exaggeration. What Happens When Your Arms Fall Asleep? Video         You wake up in the middle of the night and feel a weird, tingly feeling all throughout your arm. What's going on? 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