east antarctica

Tiny Fossils Suggest Antarctica’s Largest Ice Sheet Could Collapse

Tiny Fossils Suggest Antarctica’s Largest Ice Sheet Could Collapse

Scanning electron micrograph of diatom-rich sediments from the Southern Ocean. Image: Scherer et al. 2016. At the bottom of the world atop the forbidding Transantarctic Mountains sit the fossilized remains of microscopic, ocean-dwelling diatoms. For thirty years, scientists have argued over how these tiny algae came to rest thousands of…