Even if we don't do it on purpose (which some people do!), all of us eat at least a little dirt every year due to accidental ingestion. Learn more in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/wellness/food-nutrition/facts/how-much-dirt-eat-year.htm

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