The Heart of the World : Ned Rozell : 9781733948203 : 1733948201 : 30 Apr 2019 : Nothing rattled Keith Echelmeyer. Come back from rappelling into blue glaciers in Antarctica, teach a university class the next day. Crawl out from a plane crash with a broken leg, head to Greenland in a cast the next week. Bag an iconic Alaska peak for a first winter ascent over the weekend, stroll into work on Monday. He flew his single-engine plane like most of us drive cars. The mileage of his glacier flights equalled a few trips around the world. But May was a bit much, even for one of the world's most capable experts in the emerging field of climate studies. Finals, proposals, shuttling people and gear back and forth to Black Rapids Glacier, writing the Most Important Paper, the one that showed the rapid melt of Alaska's glaciers, which contained enough water to raise the world's seas 20 feet. His right hand. It wasn't helping. Dropping that wrench on the glacier? The numbness that made him clench