Iron weighs more after it rusts.
68
According to studies, men change their minds two to three times more often than women.
72
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Each day, up to 150 species of life become extinct.
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