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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

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