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
Diamonds can be shattered with a hammer.
-104
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The only letter not appearing on the Periodic Table is the letter "J".
180