In zero gravity, a candle's flame is round and blue.
16
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The smell of freshly cut grass is actually a plant distress call.
31
One barrel of petroleum holds 42 gallons.
20
The sun is 330,330 times larger than the earth.
75
Billions of neutrinos pass unnoticed through your body every second.
6
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The average temperature at 40,000 feet above sea level is -60 F.
56