The global median age has increased from just over 20 years in 1970 to just over 30 years in 2022. The global population breakdown by age shows that around a quarter are younger than 14 years, around 10% are older than 65, while half of the world population is in the working age bracket between 25 and 65.
Australia's population has grown older, with the median age increasing from 32.7 years at 30 June 1992 to 38.5 years at 30 June 2022. The percentage of the population aged 65 and over has increased from 11% to 17% over the same period.
In a large UK sample of over 17,000 young people aged ten to 21, researchers found the detrimental effects of high levels of social media use may be especially pronounced at ages 14-15 and 19 for boys, and 11-13 and 19 for girls.
Unsurprisingly, social media usage is highest among adolescents and young adults aged 14-24. It is estimated that young men spend 528 minutes a week on social media [1] , while young women spend considerably more time at 822 minutes each week.
“If parents can band together and say you know, as a group, we're not going to allow our kids to use social media until 16 or 17 or 18 or whatever age they choose, that's a much more effective strategy in making sure your kids don't get exposed to harm early,” he told CNN.
Middle adulthood. This time span is generally referred to as "middle age" and can be defined as the time of ages about 40+ to about 60+, depending also on sexes. Many changes may occur between young adulthood and this stage.
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. For seniors, this means more years of being active and being a valuable part of the community.
Over the 20 years to 2018 nonagenarians (those aged 90-99) grew in number from 63,000 to 181,000 (an increase of 185%), but centenarians (aged 100+) increased at an even faster rate, growing by 215% (from about 1,300 to 4,200).
The U.S. population age 65 and over grew nearly five times faster than the total population over the 100 years from 1920 to 2020, according to the 2020 Census. The older population reached 55.8 million or 16.8% of the population of the United States in 2020.
Gender ratio in the World
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.
Niger has the lowest average age at only 14.8 years.
Previous research has shown that spending time in space causes bone density loss, immune dysfunction, cardiovascular issues such as stiffening of arteries, and loss of skeletal muscle mass and strength in both humans and rodent models. These changes resemble aging in people age on Earth, but happen more quickly.
Since 2000, the national median age – the point at which one-half the population is older and one-half younger – has increased by 3.4 years, with the largest single-year gain of 0.3 years coming in 2021, bringing it to 38.8 years, according to newly released 2021 Population Estimates from the U.S. Census Bureau.
More than two-third part of the country only receives less than 500 mm annual rain. This arid, uninhabitable part of Australia lies in the middle of the continent (the Outback), away from the coasts. And this is also the reason why more than 80% of the country's population lives within 50 kilometres from the coast.
Most of Australia's 19 million people live near the coast, because the inner parts are made up of deserts. 80% of the country's population live in the south-eastern part of the country. Here you can also find the big cities like Sydney and Melbourne, or the capital Canberra.
For those who've caught the travel bug, it's hard to imagine why many people haven't ventured outside of Australia. Some small surveys estimate about 40 per cent of us have never been abroad, which probably isn't far off the mark given in the year 2017-18, just 57 per cent of Aussies held a passport.
Most of Europe have similar views of old age to the World Health Organisation, believing old age starts at 65 years of age. In America, one researcher found that you are considered old at 70 to 71 years of age for men and 73 to 73 for women.
Historically, the United Nations has defined an "older" person as anyone 60 years or older, regardless of that person's individual history or where in the world they live.
60 years of age or over.
TikTok can be a kid-friendly experience if you supervise your kids, use safety settings, and stick to songs you already know. But TikTok's emphasis on popular music means many videos include swearing and sexual lyrics, so it may not be age-appropriate for kids to use on their own.
At what age should a kid get a phone? Experts suggest that you should wait to get your kid a smartphone until at least 8th grade. Along with age, a kid's social awareness, understanding of technology, and maturity should be considered.
You have to enter your birth date to set up an account, but there's no age verification, so it's easy for kids under 13 to sign up. Common Sense Media rates Snapchat OK for teens 16 and up, mainly because of the exposure to age-inappropriate content and the marketing ploys, such as quizzes, that collect data.