Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
Did you know?
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Part of this child's pattern of daily living is attending child care during the work day
All living organisms descended from a common ancestral cell
Anthropologist Andrea Wiley (left) investigates the effects of high-altitude living on reproductive
Location of lysosomes and mitochondria in a cultured living bovine pulmonary art
Circling the forearm to create movement at the elbow.