Overview: The Earth revolves at 1,000 miles an hour. But what if it significantly slowed and eventually stopped? Sea levels at the equator drop and locations surrounded by water would dry out. With a loss of atmosphere, the Earth could no longer support human life. And each side of the Earth will be stuck in day or night for six months at a time. The dark side is lethally cold and the light side is bathed in deadly solar radiation. See how humans and creatures might cope in this changing world.