claim: In the early 2000s, ice shelves began disintegrating in several parts of Antarctica, and scientists realized that process could greatly accelerate the demise of the vastly larger ice sheets themselves.
evidence: Two sections of Antarctica's Larsen Ice Shelf broke apart into hundreds of unusually small fragments ( hundreds of meters wide or less ) in 1995 and 2002, Larsen C calved a huge ice island in 2017.