Shark Q&A: Are Bull Sharks Especially Aggressive?

TECH SPACE HUMAN WORLD HISTORY ANIMALS EXPLORATION VIDEO View Online Shark Q&A: Are Bull Sharks Especially Aggressive? The fish are actually skittish around people, says an expert who's spent untold hours among them. READ MORE Stunning Aurora Seen Over Jupiter The giant planet's magnetic field spawns "Northern Lights" far more powerful than displays on Earth. READ MORE WATCH VIDEO: Why Does Jupiter Have a Red Spot? Find out why the planet's iconic spot is like the worst sunburn in the Solar System. Omnidirectional Wheels Roll Sideways Canadian inventor posts a demo video of wheels that can be attached to any vehicle. READ MORE WATCH VIDEO: There's a Car Powered by Salt! An electric car powered by salt water has been approved for testing on public roads.  How San Francisco Is Becoming A Zero Waste City There's a growing movement of cities around the world trying to divert waste away from landfills, and San Francisco is leading the way. 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