Meet Forest Scientist Stephen Sillett. He has dedicated his life to studying the Redwood Forest canopy, 350 feet high into a separate world in the tops of the tallest and oldest trees on the planet.

Stephen and his team ended up finding much more than they were expecting: an environment where fruit grows and where small animals never touch the ground, all with a humbling view. And now they’re on a quest to measure and learn more about these ancient giants. 

Watch more about Stephen’s work in KQED’s Science on the Spot: