NPR's Juana Summers talks with Jessica Yung and Emily Kwong of Short Wave about the physics of hula hooping, why some vaccines last longer than others, and a few moon launches to watch for in 2025.

The Great Lakes don't readily evoke images of surfing and surfboard-making, but a surfer in Wisconsin is on an eco-friendly mission to change that.

Planet Money buys a "biodiversity credit" and travels to the Andean cloud forest in Colombia — to see how these credits work, and if they can really help save threatened species.