Question: At the beginning of the film, Jack Hall quickly explains how global warming could cause an ice age by altering the global ocean currents. The explanation is short and I didn't catch all of it. Could someone explain in more detail, preferably as simply as possible?
Phoenix
30th May 2004
Chosen answer: Global warming melts the icecaps, releasing millions of tons of fresh water into the oceans. This upsets the delicate environmental balance of the oceans, leading to the ocean currents stopping. It's these currents that carry warm water up into the Northern Hemisphere, causing our temperate climate. The currents stop, everything cools down, fast.
Tailkinker ★