The smell of freshly cut grass is actually a plant distress call.
31
According to studies, men change their minds two to three times more often than women.
72
Most dust particles in your house come from dead skin.
48
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The earth is approx. 6,588,000,000,000,000,000 tons.
175
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101