How Many Children are in the World? Currently, there are an estimated 2 billion children in the world ages zero to 14-years-old.
According to the United Nations Population Fund, there are about 1.9885 billion (1,988,500,000) children currently on Earth.
There are 1.3 billion adolescents in the world today, more than ever before, making up 16 per cent of the world's population.
As of 2021, There are 3,970,238,390 or 3,970 million or 3.97 billion males in the world, representing 50.42% of the world population. The population of females in the world is estimated at 3,904,727,342 or 3,905 million or 3.905 billion, representing 49.58% of the world population.
USA number of centenarians.
Out of a US population of approximately 336,997,624, in 2021, there were 89,739 centenarians (age 100+) or a prevalence of 0.27%.
There were 89,739 centenarians living in the United States in 2021, nearly twice as many as there were 20 years ago, according to data from the Population Division of the United Nations.
Youth is defined by the Australian Institute of Health and Welfare as the period from 12–24 years of age. This period includes the three main stages of adolescence—early, middle and late—during which physical, intellectual, emotional and social changes take place.
Who Are the Youth? There is no universally agreed international definition of the youth age group. For statistical purposes, however, the United Nations—without prejudice to any other definitions made by Member States—defines 'youth' as those persons between the ages of 15 and 24 years.
About 385,000 babies are born each day according to the UN. That adds up to more than 140 million a year.
Number of children aged 0-14 globally 1950-2100
In 2100, the population of children globally is expected to be about 1.9 billion.
The UN estimates that around 385,000 babies are born each day around the world (140 million a year). This number will remain relatively stable in the 50 years from 2020 to 2070. From 2070 to 2100, the number will decline to around 356,000 (130 million a year).
At the end of the study, about 16 percent of the men and about 34 percent of the women survived to the age of 90. In fact, the authors found that women who were taller than 5 feet 9 inches were 31 percent more likely to reach 90, compared to those who were under 5 feet 3 inches.
Japanese life expectancy
This low mortality is mainly attributable to a low rate of obesity, low consumption of red meat, and high consumption of fish and plant foods such as soybeans and tea. In Japan, the obesity rate is low (4.8% for men and 3.7% for women).
As many as half of today's 5 year olds in the United States can expect to live to the age of 100 and, according to the Stanford Center on Longevity, this “may become the norm for newborns by 2050.” Why are people living longer?
In the last 100 years, the life expectancy of Australians has increased by 20 years. Now Australia has 3700 people aged over 100. By 2050, Australia will have over 50,000 people aged 100 and over.
A baby born in Australia today has at least a one-in-three chance of living to 100. The Queen - not that far off becoming a centenarian herself - will be kept particularly busy sending telegrams in 2020, when about 12,000 people aged 100 or more are predicted to be living in Australia.
There are no gender differences in actual IQ
Psychology and intelligence researchers are unequivocal: men and women do not differ in actual IQ. There is no “smarter sex”.
We might expect that naturally an equal number of boys and girls are born, but this is not the case. There are biological reasons why more boys than girls are born each year: around 105 boys per 100 girls.
The number of men and women in the world is roughly equal, though men hold a slight lead with 102 men for 100 women (in 2020). More precisely, out of 1,000 people, 504 are men (50.4%) and 496 are women (49.6%).