SEWARD, Alaska — Drip. Drip. Drip.
It's the sound of one glacier melting. It’s also the sound of a whole planet careening into uncharted territory.
I am crouching by the mouth of a little ice cave underneath the Exit Glacier, a huge river of ice on the Kenai Peninsula in southcentral Alaska. Ancient ice drips from the roof of the cave onto newly bare earth. Twice in a few minutes, I hear rocks fall from the freshly exposed landscape at the glacier’s snout and decide this is not the safest place to be.