Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The sun is 330,330 times larger than the earth.
75
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
One 75-watt bulb gives more light than three 25-watt bulbs.
57