One ragweed plant can release as many as one billion grains of pollen!
51
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Pumice is the only rock that floats on water.
14
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Iron weighs more after it rusts.
68
Research indicates that plants grow healthier when they are stroked.
173
Scientists aren't sure what color dinosaurs were.
312