Some ribbon worms will eat themselves if they can't find any food.
It takes approximately 12 hours for food to entirely digest.
Earth is the only planet not named after a Roman or Greek god.
When glass breaks, the cracks move at speeds of more than 4,500 km/h (3,000 miles).
The amount of water beneath our ground soil is 50 times as much as all the water in the rivers and lakes combined.
Human thigh bones are stronger than concrete.
The many sights that represent the Chinese city of Beijing were built by foreigners: the Forbidden City was built by the Mongols, the Temple of Heaven by the Manchurians.
A bee sting is acidic and a wasp sting is alkali. To treat a sting by one of these you should use the opposite type of chemical.
Shortest Intercontinental Commercial Flight in the world is from Gibraltar (Europe) to Tangier (Africa.) Distance 34 miles, flight time 20 minutes.
The seeds of an Indian Lotus tree remain viable for 300 to 400 years.