The smallest unit of measurement in the universe is the Planck length.
After Hitler ordered the deportation of Denmark's Jewish population, Danish citizens organized a massive evacuation of the Jews to neutral Sweden, despite the risks. In the end, 99% of Danish Jews survived the Holocaust.
There are around 60,000 miles of blood vessels in the human body. If you took them all out and laid them end to end, they’d stretch around the world more than twice.
Danny Devito used to work as a hairdresser. For corpses.