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Interesting Facts - 8

The largest magnet in the world is the earth itself, because the hot nickel and iron at its core pulls everything towards it.

A dog can hear high-frequency sounds, which a human ear cannot.

Three 25 watt bulbs produce less light than one 75 watt bulb.

Human body contains enough phosphorous to make heads of 2000 matches, enough fat for 7 bar soap and enough iron to make 1 nail.

A single drop of water contains 1 hundred billion atoms.

No solar eclipse can last longer than 7 minutes 58 seconds because of the speed at which the earth moves.

Heat is better retained in moist air than dry air, which is why tropical nights are warm and desert nights cold.