Who's Protesting at The Republican National Convention?

TECH SPACE HUMAN WORLD HISTORY ANIMALS EXPLORATION VIDEO View Online Who's Protesting at the Republican National Convention? Get an inside look at the people protesting at the RNC in Cleveland. READ MORE Hummingbirds Wired to Avoid High-Speed Collisions Hummingbirds process in-flight visual information differently than other animals, new research finds. READ MORE WATCH VIDEO: How to Hack a Hummingbird's Flight  Ever wondered how hummingbirds hover so perfectly? New research reveals their secrets. Pot Dealing Traced Back 5,000 Years Steppe herders believed to have been among the founders of the European civilization may have also been the first pot dealers. READ MORE WATCH VIDEO: Why Weed Is a Lot Stronger Today Today's pot is a lot stronger than it was a few decades ago. What changed since then? What Happens If We Run Out Of Helium? Helium is used for everything -- from scanning groceries to MRI and nuclear engineering! Why is it so important and where can we find more? 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