Scientific American: Scientists have drilled into one of the most isolated depths in all of the world's oceans: a hidden shore of Antarctica that sits under 740 meters of ice, hundreds of kilometers in from the sea edge of a major Antarctic ice shelf. Humans have never glimpsed this place; reaching it required seven years of planning and 450 tonnes of fuel and gear. But understanding what is happening down there, so far from human view, will be crucial for predicting the future fate of Antarctica's ice sheets amid rising...