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Did you know?
Cyanide works by making the human body unable to use oxygen.
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?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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?
The familiar sounds of your heart are made by the heart's valves as they open and close.