Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
Did you know?
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Did you know?
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
Human tongue
Human hemoglobin variants
Contemporary Human Geography (3rd Edition)
Personality Types in Harry Potter
human vs dog done
A bipedal human