The skin of the armpits can harbor up to 516,000 bacteria per square inch, while drier areas, such as the forearms, have only about 13,000 bacteria per square inch on them.
Most destructive disease
The most destructive disease is malaria. More than 1.5 million people die from malaria every year.
More Humans Facts
Bacteria per square inch
On average people fear spiders more than they do death.
The human heart creates enough pressure while pumping to squirt blood 30 feet.