This Is How NASA Hopes to Voyage to Mars

TECH SPACE HUMAN WORLD HISTORY ANIMALS EXPLORATION VIDEO View Online This Is How NASA Hopes to Voyage to Mars There are many facets to traveling to and exploring the Red Planet, so NASA is asking for proposals. READ MORE Will 'No Fly, No Buy' Make a Difference? Would it make a dent in gun sales or violence? READ MORE WATCH VIDEO: What Is the Definition of Terrorism? The notoriously vague term gets a clarification. Giant Sinkholes Near Texas Oil Fields Are Growing New holes are also developing to join them, a satellite study shows. READ MORE WATCH VIDEO: How Scary Sinkholes Are Formed Sinkholes are eating up entire buildings. What causes them? Are Any Foods Natural Anymore? GMOs Explained You've decided to only eat natural and organic foods from now on, but what does that actually mean? 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