Not all animals have red blood -- it can also come in green, blue, clear, and even dichroic varieties. Learn more in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/animal-facts/5-animals-whose-blood-isnt-red.htm

What Caused the Laughter Epidemic of 1962?
06:12

What's the History of Remote Controls?
11:41

How Did One Portuguese Diplomat Save Thousands of Holocaust Refugees?
10:21