Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
New York's Central Park is nearly twice the size of the entire country of Monaco.
42
In 1976, an underachieving Princeton junior undergraduate wrote a term paper detailing how to make a nuclear bomb. He got an "A", but never got his paper back because it was seized by the FBI.
16
The oldest living person smoked cigarettes from the age of 21 to 117.
13
There are more than 10 million bricks in the Empire State Building!
75
There is a fake village with fake shops and restaurants that is actually a care home for elderly dementia sufferers in the Netherlands.
7
Harvard earns enough money from interest on its endowment that it could offer free tuition to every student and still profit.
13
More Americans have died in car accidents than have died in all the wars ever fought by the United States.
55