The Sherpa stew sloshed out of my bowl as the wooden table in our Himalayan lodge swayed back and forth. Someone yelled "Earthquake!" and I bolted for the door with other panicked trekkers, tumbling into the chilly mountain night. Farther up the mountain, the international group of glaciologists and engineers I was climbing to meet were huddled outside their own lodge in the village of Lobuche below Everest Base Camp. At higher than 16,000 feet in the dark, they could hear -- but, terrifyingly, not see -- an avalanche of snow falling from one of the highest peaks in the world.