Iron weighs more after it rusts.
68
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
The smell of freshly cut grass is actually a plant distress call.
31
German chemists made a replica of a trophy the size of one molecule.
68
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
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
Each day, up to 150 species of life become extinct.
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