'Tunnel of Truth' Scans for Explosives

TECH SPACE HUMAN EARTH HISTORY ANIMALS ADVENTURE VIDEO View Online 'Tunnel of Truth' Scans for Explosives In the aftermath of the Brussels bombings, take a look at tech featuring a long walkway flanked by several scanning devices could passively detect for explosives. READ MORE Veggie-Loving Prairie Dogs Revealed as Serial Killers Humans can clearly be violent, but new research suggests there are serial killers throughout the animal kingdom. READ MORE WATCH VIDEO: Murder Is Infectious Murder might just work in the same way than an infectious disease does. How Rocks Shaped the Civil War The terrain was a key factor in some Civil War battles. READ MORE WATCH VIDEO: How Many Countries Are Currently at War? More places than you might imagine. Why Earth's Biggest Animals Are Vegetarians Learn why big usually means vegetarian in the animal kingdom. 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