Did you wake up today with a craving for clay, or dirt? That’s called pica, an abnormal craving for substances other than typical food. If you went ahead and acted on your impulse, it's probably a good idea to head over to your doctor’s office. Research indicates that in most cases this craving is a result of a mineral or vitamin deficiency. This brings us to this week’s Today I Learned, as National Geographic Society grantee and ornithologist Luke Powell explains why macaws regularly munch on South American rain forest clay. Yummy!
➡ Subscribe: http://bit.ly/NatGeoSubscribe
➡ Watch All Today I Learned Clips here: http://bit.ly/2WatchTodayILearned
➡ Get More TIL (Today I Learned): http://bit.ly/MoreTIL
About TIL (Today I Learned):
Love crazy facts? We do too. Get ready to amaze your friends with some of the strangest facts you’ve ever heard. National Geographic explorers tell you new, obscure, and amazing things about the world (and beyond).
Get More National Geographic:
Official Site: http://bit.ly/NatGeoOfficialSite
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
All animals (including humans) need salt to live. Animals that live in the Amazon rain forest face a curious predicament due to the way the Andes mountain range affects weather coming from the Pacific Ocean. This geography results in an extreme lack of salt in the Amazon and, consequentially, some unique behaviors and appetites.
TIL: 20% of Our Oxygen Comes From a Bacteria: http://on.natgeo.com/1rg2dK7
Click here to read more about macaws: http://animals.nationalgeographic.com/animals/birds/macaw/
EDITOR: Laurence Alexander
SERIES PRODUCER: Chris Mattle
TIL: Why Do These Birds Eat Dirt? | Today I Learned