0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Pure water (H2O) does not conduct electricity on its own.
46
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
A cesium atom in an atomic clock beats over nine billion times a second.
43
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
In zero gravity, a candle's flame is round and blue.
16
One 75-watt bulb gives more light than three 25-watt bulbs.
57