One in four children under five has no birth record. Here is how courts, hospitals, and immigration agencies estimate an unknown birth date, and how wide the error margins really are.
Ask a neuroscientist when childhood ends and you will not hear 18. The legal age of majority and the biological age of a mature brain are two different numbers, and the second one is closer to 25. That gap explains a lot of the behaviour we label as reckless in our early twenties: the part …
Retirement age is not one number, and in 2026 it is moving faster than at any point in the past thirty years. Between 2024 and 2028, more than a dozen countries are legislating a higher state pension age, and several more have already locked in increases that will only land in the 2030s. If you …
Every year, hundreds of millions of Muslims around the world celebrate two different birthdays: their Gregorian birthday, which most people know, and their Hijri (Islamic) birthday, which follows the lunar calendar. Because the Islamic year is 11 to 12 days shorter than the solar year, your age in the Hijri system is always slightly higher …
When law enforcement discovers unidentified human remains, one of the first questions investigators need answered is: How old was this person? Unlike a living person who can simply state their birth date, forensic anthropologists and odontologists rely on a toolkit of scientific methods to estimate age at death — often with remarkable accuracy. The methods …
The amount and type of exercise your body needs changes dramatically between your 20s and your 70s. What works for building muscle in your 20s may not support joint health in your 50s, and the recovery strategies you need in your 60s look nothing like your college workout routine. Here is a decade-by-decade guide grounded …
Your body at 25 is not the same machine it is at 55. Every decade brings shifts in metabolism, bone density, hormone levels, and how efficiently your body absorbs nutrients. Understanding these changes helps you adjust your diet before deficiencies take hold — not after. Why Nutrition Needs Change with Age Three key biological processes …
Some children pick up a book at age 4 and start sounding out words. Others reach first grade still puzzling over the alphabet. Both scenarios fall within the normal range. Reading readiness is not a single switch that flips at a specific age — it is a gradual build-up of multiple skills, from letter recognition …
Most parents remember the first tooth — that tiny white speck poking through at around 6 months. But the second big milestone, losing those baby teeth, catches many families off guard. The average child starts losing baby teeth around age 6, but the normal range spans anywhere from 4 to 7 years old. If your …
Your immune system ages gradually. By age 50, the thymus produces only 10% of the T-cells it did at 10. Here’s what changes at every decade and what you can do about it.