Out of all the senses, smell is most closely linked to memory.
146
Cold water weighs more than hot water.
93
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
No matter how cold it gets, gasoline will not freeze.
107
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118