When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Out of all the senses, smell is most closely linked to memory.
146
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The average home creates more pollution than does the average car.
33