From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
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Lobsters have blue blood.
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Your heart will pump about 212 million liters in its lifetime.
26
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Your body is creating and killing about 2.4 million red blood cells per second.
17
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
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