Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Out of all the senses, smell is most closely linked to memory.
146
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
German chemists made a replica of a trophy the size of one molecule.
68
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
The average temperature at 40,000 feet above sea level is -60 F.
56
A cesium atom in an atomic clock beats over nine billion times a second.
43