Crack. Crack. Crack.
Last week, iceberg A-68a was larger than Rhode Island. By Dec. 23, satellite footage showed the berg had broken apart into several (though still massive) chunks of ice.
Earth scientists have followed this enormous iceberg since July 2017, when it snapped off an ice shelf (the end of a glacier that floats over the ocean) in Antarctica. But over the last month, the berg stirred fresh intrigue. While drifting through the Southern Atlantic Ocean, A-68a was on course to…