A dog's sense of smell is 1,000 times more sensitive than a humans.
The average person accidentally eats 430 bugs each year of their life.
Only female mosquitoes bite.
Each person sheds 40lbs of skin in his or her lifetime.
If every star in the Milky Way was a grain of salt they would fill an Olympic sized swimming pool.
Sneezes can travel up to 100mph
A human heart beats 100,000 times a day.
A quarter of the world's plants are threatened with extinction by the year 2010.
more here:
Unusual Scientific Facts