Signal Sparks Alien Intelligence Speculation

TECH SPACE HUMAN EARTH HISTORY ANIMALS ADVENTURE VIDEO View Online Signal Sparks Alien Intelligence Speculation It may be unlikely the Kepler Telescope detected signs of alien life, but we consider the What Ifs. READ MORE Greenhouse Gas Thaws, Bubbles Up From Seafloor Liberated ancient deposits of the potent greenhouse gas are another sign of climate change. READ MORE WATCH VIDEO: Global Warming And Climate Change: What's The Diff? We break down the meaning of the terms -- and how we perceive them. Fighting Foxes Top Wildlife Photo Competition The award-winning shots were culled from more than 42,000 entries submitted by photographers from 96 countries. READ MORE WATCH VIDEO: Why Polar Bears Don't Hibernate Find out how hybernation works and why polar bears don't take part. How Long Should Sex Last? What's considered the "normal" amount of time for sex to go on? Can it ever be too long? It turns out that what's considered average has varied over time. 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