Joe Posner

Head of Video

Joe Posner leads video at Semafor. Previously, he co-founded Vox’s video program in 2014, building a giant YouTube channel an eventually streaming series like Explained on Netflix and beyond. He is also a 2023 New America Fellow.

Water crisis: Lessons from South Africa

There’s a giant clock ticking until the next major city runs out of water. Our most ambitious mini-documentary yet looks to lessons from South Africa.

Clean energy is booming. We’re about to waste almost all of it.

One year ago, the US Senate approved a historic investment in climate action. Turns out money was the easy part.

Inside the last best hope to solve the border crisis

Today we’re launching first episode of our new video series, The Agenda, on Washington’s highest-stakes challenges, and the good faith efforts to solve them.