National Public Radio: Not long ago, researchers found something amazing under the ice of West Antarctica: A valley deeper than the Grand Canyon, measuring about two miles deep, 15 miles across, and nearly 200 miles long. Neil Ross, lead author of the , wasn't looking for the valley he found it by accident. Ross spends most of his time in Antarctica measuring the thickness of the ice sheet and surveying features below the surface using radar technology. The expeditions last for weeks or even months. "It's a mix of...