Historian Eric Cline argues the Bronze Age collapse wasn't the work of one invading force or one bad harvest, but something far harder to stop: An overly interdependent system that had no way to absorb multiple shocks at once.

When Jesus was crucified, it led to even more followers. When books are banned, people flock to read them. Humans are fascinated by the forbidden, which is why censorship – especially in the digital age – doesn’t work. Jacob Mchangama explains.