If your DNA was stretched out it would reach to the moon 6,000 times.
256
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Enamel is hardest substance in the human body.
61
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
Your thumb is about the same size as your nose.
124