Ever heard of “hitting the wall” during a marathon? This is what happens when your body runs out of stored energy, and your brain goes into protection mode. Here’s exactly how it happens! 🧠 We’re revisiting this @okaytobesmart where @drjoehanson runs a marathon! Have you ever “hit the wall”? Share with us in the comments! | PBS Digital Studios

PBS Digital Studios turns 10 years old this year! 🥲🥳 We couldn’t have lasted this long without the support of all our amazing fans. To celebrate, we asked our creators and staff to reflect on the past decade with us. Here’s what they had to say... #PBSDS10 | PBS Digital Studios

25 reactions | We've got a brand new series coming to PBS Terra on...

Lençóis Maranhenses sits at the intersection of three biomes—a rare overlap that supercharges biodiversity. Across 350 square miles of dunes, the rainy season brings thousands of crystal blue lagoons into view, many big enough to swim in. What makes this surreal environment possible? And why, even after 2 million years in existence, does it still feel so mysterious? Untold Earth explores the seeming impossibilities behind our planet’s strangest, most unique natural wonders. From fragile, untouch

17K views · 44 reactions | Hip Hop don't stop!  Celebrate the 50th year of Hip Hop with a break down from some of the most iconic figures in the genre. Fight the Power: How Hip Hop Changed the World premieres Tue, Jan 31 at 9/8c. #FightThePowerPBS | PBS Digital Studios | Facebook