Do your eyes send out light like headlights? Does your liver create blood? Do bumps on your head tell what''s inside your brain? At one time, science supported wild notions like these! But later studies proved these ideas were nonsense. Discover science''s biggest mistakes and oddest assumptions about the human body, and see how scientific thought changed over time.

Do your eyes send out light like headlights? Does your liver create blood? Do bumps on your head tell what''s inside your brain? At one time, science supported wild notions like these! But later studies proved these ideas were nonsense. Discover science''s biggest mistakes and oddest assumptions about the human body, and see how scientific thought changed over time.

Do your eyes send out light like headlights? Does your liver create blood? Do bumps on your head tell what''s inside your brain? At one time, science supported wild notions like these! But later studies proved these ideas were nonsense. Discover science''s biggest mistakes and oddest assumptions about the human body, and see how scientific thought changed over time.