#IceBridge

Want to spruce up your digital space? We’ve got you covered here on Earth with wallpapers and virtual backgrounds. #NASAatHomeYou can vote for your favorite Earth images in our Tournament

ANTARCTICA A lost history thread The frozen final frontier, the only unexplored continent. Antarctica has never been inhabited, and never been host to a prehistoric civilization. Is this true? Or

William Colgan, Ph.D.

Instead of disappearing from Twitter for fieldwork for the next 35 days, I'll guide a virtual expedition, with an ice-sheet post every day for the next 35 days.Day 1/35 -

THREADTHE INVISIBLE ENEMY1. What does @POTUS mean when he says “The world is at war with a HIDDEN ENEMY?”2. What does he mean when he says “We will defeat an