Diamonds can be shattered with a hammer.
-104
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
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
Each day, up to 150 species of life become extinct.
-23
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The only letter not appearing on the Periodic Table is the letter "J".
180
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21