Four hundred million years ago, a group of fish would undertake one of the most important journeys in the history of life and become the first vertebrates to live on dry ground. But first, they had to acquire the ability to breathe air. So how did these animals, which had been adapted for millennia to life under water, learn how to breathe? PBS Eons host Kallie Moore takes an in-depth look at the group’s incredible journey.
ARVE error: need id and provider
Mother Nature has been known to put on a show or two. But some of her productions are truly out of this world.
Take “raining animals,” a meteorological phenomenon recorded by many countries throughout history. The animals most likely “raining” from the sky are fish, frogs and birds, but there have been reported downpours of worms and spiders as well.
Scientists theorize the phenomenon is the work of waterspouts into which animals get sucked up. Following in this edition of Hybrid Librarian are 10 of the strangest natural phenomenon on Earth.
ARVE error: need id and provider
Ever wonder what happens after you flush? You should, because your pee is causing problems! Hank Green talks about how, and why, human waste is having weird effects on the natural world, like homicidal fish and hermaphroditic frogs.
ARVE error: need id and provider
