Why do we laugh?

The climate is changing. So are we. On What On Earth, you’ll explore a world of solutions with host Laura Lynch and our team of journalists. In 1970, 20 million people showed up to fight for the environment on the first Earth Day. More than five decades later, is it time for this ...  Show more

Tai tries to do his part by recycling whenever he can. But it turns out just tossing stuff into the blue bin doesn't do a whole lot: less than 10 percent of our plastic waste actually gets recycled, with the rest either ending up in landfill, burned or shipped overseas! How did w ...  Show more

Fifteen-year-old Tai Poole won’t rest until he’s uncovered the mysteries of the universe, one probing question at a time. In Season 4 of his Webby-winning podcast, Tai talks to everyone from NASA scientists to stand-up comedians to his equally curious little brother Kien. If you’ ...  Show more

Ciaran and Dan delve into one of the biggest mysteries of all time: Are we alone in the universe? With the help of Voyager Golden Record artist Jon Lomberg and more, we try to discover how we might know if something else was out there and if we ever did discover alien life, how w ...  Show more

Mr. Eric teams up with Rhea Pechter of Little Stories for Tiny People this week. Fair Elise and Pixacato are fed up with work and school, respectively. Good thing it’s Freaky Friday! Can Fair Elise survive a day in ballet school? Can Pixacato solve the mystery of the missing robo ...  Show more

Professor Mooshpants and Dr. Nozetal are some of What If World’s maddest scientists. They also happen to be among the youngest. Can the brilliant baby and precocious puppy work together to free themselves from a maximum security day care? Or will they have to wait until their par ...  Show more