The parachute was invented by DiVinci in 1515.
Eighteen per cent of all global carbon dioxide emissions are from cars.
Mariner 6 and 7 completed the first dual mission to Mars, flying past the equator and south polar regions and analyzing the Martian atmosphere and surface with remote sensors.
The can opener was invented 48 years after cans were introduced.
About 10% of U.S. households pay their bills in cash.
Ducks will only lay eggs early in the morning.
Blood accounts for 7% of the human body weight.
The Roman Catholic Church did not acknowledge that the earth revolves around the Sun until the mid 1990's.
If an Amish man has a beard, he is married.
Men get hiccups more often than women.