Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
Ice isn't slippery. What makes people and things slip on ice is water. A thin layer of ice melts when pressure is applied to it and it is this wet layer on top of the ice that is slippery.
153
Tsunamis ( tidal waves ) travel as fast as jet planes.
97
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
Teddy bears were named after U.S. President Theodore 'Teddy' Roosevelt.
23
Since 1982, a radio frequency emanating from Russia has been broadcasting a buzzer-like sound and, periodically, an unknown voice reads orders, names, and numbers. No one knows where exactly it is coming from or what it means.
13
The strangers in your dreams are actually people that you've seen in real life.
50