100 episodes is a big milestone, and as such, we want the episode to be perfect, so we're taking an extra week to make sure that happens!

The weirdest animals are sometimes the most familiar. In the case of reptiles, that's the turtles! Everyone knows what a turtle is...except scientists! Find out what we DO know about them in this week's episode!

4 Mass Extinctions down...1 to go. Following the near-total destruction that was the end-Permian mass extinction, life had to rebound somehow. Unfortunately for everyone but the dinosaurs, that rebound lead life straight into another mass extinction 50 million years later. Let's learn about it!

Bats are *the* symbol of spooky season, but is it deserved? Let's learn about bats, their relatives, and how they need our help!

Fossil collecting is a hobby for many people around the world, but how legal is it? That depends where in the world you live! How legal is it to collect fossils where you live? Maybe you'll find out in today's episode about international fossil laws!

Mike takes the wheel once again to teach Gavin about the music of their childhoods...oh and also some extended members of the Kennedy political dynasty.

Happy National Fossil Day!

Gavin, Mike and Fia talk about the most interesting group of lizards; Snakes! Why don't they have legs? Why don't they have two lungs? Why are people afraid of them? Let's talk about it.

Gavin and Mike talk to one of Gavin's former professors, Dr. Robert Darling (Dr. Bob), about the Adirondack Mountains! Mike spent the summer hiking in and around them, and wanted to learn more about them, so we brought in an expert!

Gavin teaches Mike about the exploding wonders of the planet; volcanoes.

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Mike is back from the wilderness, and just in time to join Fia to learn about Antarctica, the *most extreme* continent.

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