Balsa wood is classified as a hard wood!
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Cold water weighs more than hot water.
93
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
No matter how cold it gets, gasoline will not freeze.
107
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18