Did You Know?
Human teeth are just as strong as shark teeth.
While shark teeth are often thought to be superior, human teeth are equally strong by volume. The enamel covering our teeth is the hardest substance in the human body and can withstand tremendous pressure. Its unique crystalline structure makes it harder than steel but more brittle.
Did You Know?
The human heart beats about 100,000 times per day.
This amounts to about 35 million beats per year and 2.5 billion beats in an average lifetime. The...
Did You Know?
Your stomach acid could dissolve a razor blade.
Stomach acid, with a pH between 1 and 3, is strong enough to dissolve metal. A study found...
Did You Know?
Your body produces enough saliva in your lifetime to fill two swimming pools.
The average person produces about 1-1.5 liters of saliva daily, totaling about 25,000 gallons over a lifetime. Saliva...