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.
Vietnam is one of the most pro-US countries in the world, with 76% having a favorable view. This is higher than Japan, the United Kingdom, and France.
The moon has its own time zones.
The first TV commercial didn't air until the 1940s.