Sound travels about 4 times faster in water than in air.
408
For every gallon of sea water, you get more than a quarter pound of salt.
45
Iron weighs more after it rusts.
16
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Your brain is 80% water.
525
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Nearly 50% of the world's scientists are assigned to military projects.
71
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34