Did you know you owe your teeth to a 15th Century emperor? This week marks significant strides in history for dental care, but that's not all.
The week also commemorates the first African-American astronaut—and it's not who you might think. Chemists synthesized one of the world's most important molecules for the first time, and a man made history while traveling the high seas.
What else does "This Week In Science History" hold? Check out the slideshow for all the landmark events.