Neanderthal man had a brain capacity 100cc larger than modern man's.
50
The bark of an older redwood tree is fireproof.
65
The average home creates more pollution than does the average car.
33
One ragweed plant can release as many as one billion grains of pollen!
51
Pumice is the only rock that floats on water.
14
Billions of neutrinos pass unnoticed through your body every second.
6
One barrel of petroleum holds 42 gallons.
20