The Gmail logo was designed the night before it was launched.
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Sudbury Valley School allows students to do whatever they want; no curriculum, tests, homework, or even classes unless requested. 82% of students get accepted to college, as opposed to the 63% national public school average.
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The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
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The largest cell in the human body is the female egg and the smallest is the male sperm.
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The human brain is more active during sleep than during the day.
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Dogs can make about 100 different facial expressions.
18
A man earned 4 million airline miles for free without breaking any laws by using his credit card to purchase free-delivery $1 coins from the U.S. mint.
11