Stretch your mind and strengthen your relationships by stealing this simple way to learn from schoolkids, says education innovator and TED Prize winner Sugata Mitra.

Not all plastic are evil, but we could all probably do with a whole lot less. Check out these great ideas — from a googly-eyed trash catcher to a styrofoam substitute made from mushrooms — and learn some small steps you can take right now.

Physicians Raj Panjabi and Seth Berkley are on a mission to ensure that every person in the world has access to decent medical care. In a conversation, they discuss the obstacles standing in their way and the bold ideas that could help overcome them.

When taxpayer money goes to companies with murky ownership, it may put lives in danger and support shady actors. The watchdog group Global Witness shows what can happen when a government ends up working with anonymous companies.

The strange behavior of Tabby’s Star, or KIC 8462852, has inspired modern astronomy’s wildest guessing game, with explanations ranging from aliens to sunspots. Writer Stephen Petranek got Tabby herself to assess the competing ideas.

Space archaeologist Sarah Parcak highlights 4 thrilling recent finds — and shows us how we can safeguard ancient sites with GlobalXplorer, her new online citizen science platform.

Last Mile Health has expanded healthcare access to the most remote regions of Liberia. Raj Panjabi, the nonprofit’s founder and winner of the 2017 TED Prize, looks back at how his team handled the Ebola outbreak — and how it can help them build a healthier future for their country and us all.