Sound travels about 4 times faster in water than in air.
408
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
A cesium atom in an atomic clock beats over nine billion times a second.
43
Out of all the senses, smell is most closely linked to memory.
146
The smell of freshly cut grass is actually a plant distress call.
31
Billions of neutrinos pass unnoticed through your body every second.
6
Iron weighs more after it rusts.
16
Scientists are now able to grow 'beating' heart tissue in a lab!
162