In zero gravity, a candle's flame is round and blue.
16
One ragweed plant can release as many as one billion grains of pollen!
51
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Most dust particles in your house are made from dead skin!
67
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16