Aluminum used to be more valuable than gold!
84
Indoor pollution is 10 times more toxic than outdoor pollution.
62
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Billions of neutrinos pass unnoticed through your body every second.
6
Nylon is made from coal and petroleum.
42
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
One 75-watt bulb gives more light than three 25-watt bulbs.
57
In zero gravity, a candle's flame is round and blue.
16