Pumice is the only rock that floats on water.
14
The smell of freshly cut grass is actually a plant distress call.
31
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
The average home creates more pollution than does the average car.
33
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89