Parents receive 1 out of every 5 Valentines.
20
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
Mackinac Island, Michigan, has banned cars since 1898!
4
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
The reindeer is the only mammal that can see UV light.
17