A single speck of dust is half way in size between a subatomic particle and the Earth.
15
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Your brain is 80% water.
525
A cesium atom in an atomic clock beats over nine billion times a second.
43
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Iron weighs more after it rusts.
68