E1 - Earth Is a Hot Mess

Aired: April 21, 2017

Bill calls out climate change deniers, breaks down the science of global warming and explains how we can make the planet a cooler place to live.

E2 - Tune Your Quack-o-Meter

Aired: April 21, 2017

Bill and his panel of experts debunk bogus alternative remedies like homeopathy, the healing power of magnets ... and curing cancer by yelling at it.

E3 - Machines Take Over the World

Aired: April 21, 2017

From robots that paint Rembrandts to Twitterbots gone rogue, Bill and his guests explore the potential and pitfalls of artificial intelligence.

E4 - More Food, Less Hype

Aired: April 21, 2017

Bill extracts DNA from a strawberry in the lab and talks about genetically modified foods with a Monsanto executive, a professor and a farmer.

E5 - The Original Martian Invasion

Aired: April 21, 2017

Bill introduces the theory of panspermia, NASA scientists discuss the Mars 2020 mission, and Wil Wheaton and the panel ponder life on other planets.

E6 - Do Some Shots, Save the World

Aired: April 21, 2017

With help from some friends in raincoats and a room full of unemployed germs, Bill demonstrates how vaccines work and why everyone needs to get them.

E7 - Cheat Codes for Reality

Aired: April 21, 2017

Bill and his correspondents check out video game technology that's changing the world, including a game that helps surgeons sharpen their skills.

E8 - This Diet Is Bananas

Aired: April 21, 2017

What's in a calorie? Bill flambés a marshmallow in the name of science, experts weigh in on fad diets, and singing kale keeps it real about nutrition.

E9 - The Sexual Spectrum

Aired: April 21, 2017

Sex is complex! Bill explores the ever-evolving science of sexuality with help from a panel of experts and "Crazy Ex-Girlfriend" star Rachel Bloom.

E10 - Saving the World -- with Space!

Aired: April 21, 2017

Bill and the panel discuss private space travel. Mean astronaut Joel McHale answers questions, and lunar gravity gives a young basketballer a boost.

E11 - Malarkey!

Aired: April 21, 2017

Chemtrails. Crop circles. Palm readers. Bill takes aim at pseudoscience and explains how confirmation bias makes us believe things that aren't true.

E12 - Designer Babies

Aired: April 21, 2017

Bill explores advances in IVF that are helping couples have healthy babies. "Project Runway" star Tim Gunn hosts a special fashion show in the lab.

E13 - Earth's People Problem

Aired: April 21, 2017

Bill and his guests talk about tackling overpopulation by empowering women. Comedian Joanna Hausmann interviews couples about male contraception.