|
|
Did you know?
Cyanide works by making the human body unable to use oxygen.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Did you know?
Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.