13 Things You Shouldn't Do on Friday the 13th

TECH SPACE HUMAN EARTH HISTORY ANIMALS ADVENTURE VIDEO View Online 13 Things You Shouldn't Do on Friday the 13th Feeling lucky? Push your luck with this list of 13 things you should never do, according to various superstitions. READ MORE Fake Jellyfish and Other Fake Foods From China Earlier this week, it was revealed China was marketing fake jellyfish. But jellyfish aren't the first fake food to hit Chinese markets. READ MORE WATCH VIDEO: Can This Jellyfish Live Forever? A jellyfish in Japan can reverse its own aging process. 'Blade Runner' Device Detects Emotions Inspired by the famous Voight-Kampff test, designers speculate on an emotion detector that plugs into your smart phone. READ MORE WATCH VIDEO: Does Ibuprofen Affect Your Emotional State? It turns out that the pain reliever may have an impact on your emotions. Why Traffic Grinds to a Halt for No Reason If you've ever been in a traffic jam, finally reached what you expected to be an accident and saw nothing, it was just mathematics slowing you down. 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 2016 Discovery Communications, LLC