Mars Rover Curiosity Drops Into Safe Mode

TECH SPACE HUMAN WORLD HISTORY ANIMALS EXPLORATION VIDEO View Online Mars Rover Curiosity Drops Into Safe Mode For the first time since 2013, NASA's rover has switched itself into a low-power state as a precaution, but it's still communicating with Earth. READ MORE Is Rio's 'Superbug' Already on US Beaches? Brazil has identified disease-resistant bacteria in sewage in Rio's beaches and bays. The same kind of resistant bacteria has been popping up around coastal southern California. READ MORE WATCH VIDEO: Why Superbugs Thrive In Hospitals What is it about hospitals that makes people sick? Grab an Umbrella: It's Raining Fire All you need to make it rain fire is a little steel wool, a chain, a whisk ... and one brave model. READ MORE WATCH VIDEO: Why Does Rain Smell So Good? Do you love the smell after it rains? You're not alone, and science has the reason why.  Do Animals Understand Death? Many species move as a group, but when a member passes, do they grieve their loss? Their communal behavior just might warm your human heart. 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