Katrina 10 Years Later: Is New Orleans Sunk?

TECH SPACE HUMAN EARTH HISTORY ANIMALS ADVENTURE VIDEO View Online Katrina 10 Years Later: Is New Orleans Sunk? Disappearing wetlands, rising seas and terrible hurricanes. Is there any hope for the Big Easy? Researchers say yes, definitely yes. READ MORE Rare Nautilus Makes First Appearance in 30 Years The elusive Allonautilus scrobiculatus, unseen since 1984, pops up in waters off Papua New Guinea. READ MORE WATCH VIDEO: Should We Close the Ocean to Save Fish? Overfishing is a growing problem that could mean no more fish for us. Could Alien Life Spread 'Like a Virus' to the Stars? As techniques advance, a team of astrophysicists thinks they will be able to not only detect the signatures of alien life, but also track its relentless spread throughout the galaxy. READ MORE WATCH VIDEO: Why We Blame Everything on Aliens Crop circles, missing persons, animal mutilations -- ET's been blamed for 'em all. Do Big Brains Equal High Intelligence? If sheer brain size were the best gauge of intelligence, whales would be the smartest animals on Earth. So what's the best way to evaluate brain size and smarts? 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