Iron weighs more after it rusts.
68
The smell of freshly cut grass is actually a plant distress call.
31
Billions of neutrinos pass unnoticed through your body every second.
6
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61