Iron weighs more after it rusts.
68
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Out of all the senses, smell is most closely linked to memory.
146
Pumice is the only rock that floats on water.
14
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
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
Each day, up to 150 species of life become extinct.
-23
If the chemical sodium is dropped into water it will immediately and violently explode.
67