Sound travels fifteen times faster through steel than through air.
134
One ragweed plant can release as many as one billion grains of pollen!
51
German chemists made a replica of a trophy the size of one molecule.
68
The sun is 330,330 times larger than the earth.
75
Research indicates that plants grow healthier when they are stroked.
173
One 75-watt bulb gives more light than three 25-watt bulbs.
57
According to studies, men change their minds two to three times more often than women.
72
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79