Pumice is the only rock that floats on water.
14
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
One third of the electricity produced on earth is used to power electric light bulbs!
75
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The smell of freshly cut grass is actually a plant distress call.
31
Out of all the senses, smell is most closely linked to memory.
146