Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
Paper money is not made from wood pulp but from cotton. This means that it will not disintegrate as fast if it is put in the laundry.
37
There was once an undersea post office in the Bahamas.
241
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
In Dubai, there’s a fridge magnet that orders a pizza delivered to your door.
12
Harvard earns enough money from interest on its endowment that it could offer free tuition to every student and still profit.
13
The glue on Israeli stamps is certified kosher.
67
There are more telephones than people in Washington, D.C.
121