The average temperature at 40,000 feet above sea level is -60 F.
56
The bark of an older redwood tree is fireproof.
65
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Billions of neutrinos pass unnoticed through your body every second.
6
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
One third of the electricity produced on earth is used to power electric light bulbs!
75
The smell of freshly cut grass is actually a plant distress call.
31
One ragweed plant can release as many as one billion grains of pollen!
51