Scientists have discovered that copper pollution of the atmosphere occurred about 2500 years ago. This was discovered by analyzing ice cores from Greenland. The pollution was attributed to the Romans who used copper for military purposes and to produce coins.
A thimbleful of a neutron star would weigh over 100 million tons.
Polar Bears are nearly undetectable by infrared cameras, due to their transparent fur
Hydrofluoric acid will dissolve glass.
If you stretch a standard Slinky out flat it measures 87 feet long.
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