Out of all the senses, smell is most closely linked to memory.
146
One barrel of petroleum holds 42 gallons.
20
Hot water can freeze faster than cold water.
181
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The earth is approx. 6,588,000,000,000,000,000 tons.
175