Si lo hubiera sabido (2022)

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.

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

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

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.

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