Extreme environments can be found on Earth, in space, and in the depths of the ocean. Dr. Biology and physiologist, astronaut, and mountain climber Scott Parazynski sit down and talk about what life is like to explore these environments. So hold on to your seat as we blast off for a fun trip. Did we mention the Vomit Comet?

What happens when you mix part Robinson Crusoe and Swiss Family Robinson with biology? You get an adventure that has filled many lifetimes (bird lifetimes). Dr. Biology had the opportunity to sit down with Peter and Rosemary Grant to talk about the more than 30 years they spent studying what have come to be called Darwin’s finches.

They might be colorful. They might be cute to some people. But don’t let that fool you. These bright colored frogs are poisonous. Dr. Biology talks with biologist Molly Cummings to learn about her work with some frogs that advertise to predators to stay away and other frogs that take advantage of this signal by copying the colors of their poisonous cousins.

Not everyone has been on a hike and very few have hiked with a park ranger. Dr. Biology hikes South Mountain Park with not one but two park rangers. Park Rangers Liz Smith and Justin Olson are our guides for the 2.5 mile trip up Holbert Trail. This episode provides hiking tips and a preview of what treasures await those who hike this park.