In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Did you know?
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
Did you know?
Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Examples of modified aboveground roots.
Permanent Teeth
Anterior and lateral views of the body illustrating directional terms.
Body directional terms.
The roots of climate change
Studying the genetic roots of mating and bonding behavior