The Most Exciting Drones Aren't in the Air--They're in the Ocean

In July, three odd-looking, 23-foot-long sailboats will launch from a dock in Alaska's Dutch Harbor. They will meander the seas between the U.S. and Russia to track ice melt, measure the ocean's levels of carbon dioxide, and count fish, seal, and whale populations. And they'll do all this without a single human being on board.