How has toxoplasma turned the world into zombies?

In this fascinating episode of Stuff You Should Know, Josh and Chuck dive into the bizarre world of toxoplasma gondii, a common parasite that may be secretly influencing human behavior and personality. The hosts explore how this cat-loving parasite manipulates the brains of rats to make them attracted to cat urine, and investigate disturbing research suggesting it might be doing something similar to the estimated 80% of humans who carry it. From gender-specific personality changes to increased car accident rates, this episode examines whether a tiny parasite could literally be running the world.