Joshua Cassidy

Joshua is a Multimedia Producer for KQED Science and the Lead Producer for Deep Look. After receiving his BS in Wildlife Biology from Ohio University, he went on to participate in marine mammal research for NOAA, USGS and the Intersea Foundation. He also served as the president of The Pacific Cetacean Group, a nonprofit organization dedicated to teaching students K-6 about whales. Josh studied science and natural history filmmaking at San Francisco State University and Montana State University.

Banana Slugs: Secret of the Slime

Beneath the towering redwoods lives one of the most peculiar creatures in California: the banana slug. They're coated with a liquid crystal ooze that solves many problems slugs face in the forest -- and maybe some of our own.

The Fantastic Fur of Sea Otters

Sea otters aren’t just cute -- they’re a vivid example of life on the edge. Unlike whales and other ocean mammals, sea otters have no blubber. Yet they're still able to keep warm in the frigid Pacific waters. The secret to their survival? A fur coat like no other.

The Hidden Perils of Permafrost

For thousands of years, mysterious bacteria have remained dormant in the Arctic permafrost. Now, a warming climate threatens to bring them back to life. What does that mean for the rest of us?

The Amazing Life of Sand

There’s a story in every grain of sand: tales of life and death, fire and water. If you scooped up a handful of sand from every beach, you'd have a history of the world sifting through your fingers. From mountain boulders to the shells of tiny ocean creatures, follow the journey that sand takes through thousands of years across entire continents to wind up stuck between your toes.