To make a ‘Snowball Earth,’ sci-fi moves fast. Geology is far slower
Here are some ways the world might end in ice, according to science fiction. Earth freezes. Humankind’s remnants huddle in ice caves, fending off giant alien monsters (Snowball Earth). Or people shelter in the New York Public Library as ice encases the Empire State Building (The Day After Tomorrow). Or a train hurtles in an…
