In Space, No One Can Hear You Sneeze

TECH SPACE HUMAN EARTH HISTORY ANIMALS ADVENTURE VIDEO View Online In Space, No One Can Hear You Sneeze Despite being known for being in peak physical conditions, astronauts do face the possibility of getting sick in space. READ MORE Wait, Didn't Our Ancestors Eat Red Meat? Red meat may cause cancer, a study reported this week. But didn't we evolve to eat it? READ MORE WATCH VIDEO: 4 Common Diet Myths Debunked We take a hard look at several diet myths and try to decipher them. Africa Could Lose Half Its Lions A new analysis of population data causes alarm for conservationists looking across the next 20 years. READ MORE WATCH VIDEO: Why Do Zebras Have Stripes and Lions Have Manes? Check out these prominent animal features with a weird purpose. Is It Safe to Take Expired Medicine? Would that old, half-used bottle of cough suppressant in your cabinet still work if you suddenly needed it? WATCH Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! At Discovery Communications, we value your privacy. If you would like to be removed from future communications like this, please click here. Privacy Policy Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © Copyright 2015 Discovery Communications, LLC