This episode features:

-Do celebrity suicides cause people to commit suicide?

-Why do we use the QWERTY keyboard?

-Why doesn't the United States use the metric system?

-Are chimpanzees smarter than children?

-How long can a person survive in the wilderness for?

-Why did humans take over the planet?

-Why do we copy celebrities?

-How do marketers prey on our psychology?

-Why do people care about the political beliefs of actors?

-How do memes spread?

-Why do common expressions often rhyme?

-Why is there so much political outrage on social media?

-Why do so many people want to immigrate to the United States?

-Why do successful religions tend to encourage reproduction?

-What is the function of conservative moral intuitions?