In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Natural capital degradation
Causes of cerebrovascular accident (CVA), or stroke.
Natural seletion
A Natural Oil Seep
Algorithm for assessing a patient at risk for suicide.