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.

Bill Nye and the team debunk alternative medicine, including an explanation into the placebo effect & why we think something works when it has no basis in science proof.

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

Bill Nye brings on representatives from Monsanto Corporation to discuss GMO foods.

Bill introduces the theory of panspermia (which is the hypothesis that life exist throughout the Universe), NASA scientists discuss the Mars 2020 mission, and Wil Wheaton and the panel ponder life on other planets.

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

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

So what exactly is in a calorie? Bill flambes a marshmallow in the name of science, experts weigh in on fad diets, and singing kale keeps it real about nutrition.

Bill Nye explores the spectrum of sexuality.

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

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

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