The guys discuss how not to do a fecal transplant, why pigeons bob their heads, and how to spot mental illness from a stray hair.

The guys do a rare episode sans scientist to discuss whether researchers have really found the ancestral homeland of all human beings and how to stop being lazy and regrow your lost limbs.

The guys welcome back Dr. Troy Sandberg to discuss the disease that made smallpox seem like no big deal, a leaf that produces fuel, and how to trip balls way better (scientifically speaking).

The guys welcome back Dr Troy Sandberg (@DrTroyScience) to talk about evolution, how the human dong is like a peacock's feathers, and why quantum supremacy is not a racist ideology.

The guys welcome new Science Guest Host Nicki Fuchs to discuss the one thing that has killed more people than war and famine combined, why scientifically speaking the Irish should have conquered the world, and how a star in our universe can be older than the universe itself.

The guys welcome new science guest host Nicki Fuchs to discuss why Asia is lying to you about its existence, how someone may have just changed the world through recycling, and why what's going on in a Koala's balls may be a threat to our very existence.

The guys welcome back Dr Eva to discuss what eyelashes are for (it's not what you think), Nobel prizes, and how climate change can cause disease outbreaks.

The guys welcome back the legendary Dr. Eva to discuss how planetary extinction events happen on earth, the discovery of the unfortunately named "Mold Pig" (neither a mold nor a pig), and a whole new air conditioner concept that uses twisted cables as a cooling mechanism.

The guys welcome back Dr. Troy Sandberg to discuss how aspirin interacts with pollution in your lungs, a breathalyzer for opiates, and how the batteries of the future might be made of beer cans.

The guys welcome back Dr. Troy Sandberg to talk about the origins of nuclear weapons (again) and how life came from non-life.