Dive Under the Ice With the Brave Robots of Antarctica

These are among the most perilous of environments on planet Earth, places where few humans dare tread. They ain't got nothin', though, on waters of our planet's polar regions, where frigid temperatures and considerable pressures would snuff a puny human like you in a heartbeat. This is the stuff their tough-as-hell bodies were made for. But it comes at a price: Getting the bot back to its icebreaking boat alive can be more challenging than communicating with a Mars rover millions of miles away. Seabed doesn't swim like your typical autonomous underwater vehicle.