It wasn't a total cultural collapse, but several Maya cities were abandonded all around the same time. Learn how natural and human-driven climate change may have been key in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/environmental/green-science/climate-change-end-mayan-civilization.htm/printable

What Pranks Have Astronauts Pulled?
08:40

How Can Your Body Learn to Tolerate Cold?
10:58

How Did the War of 1812 Settle the American Revolution?
10:23