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
Cold water weighs more than hot water.
93
Diamonds can be shattered with a hammer.
-104
A ball of glass will bounce higher than a ball made of rubber.
73
One ragweed plant can release as many as one billion grains of pollen!
51
Aluminum used to be more valuable than gold!
84