The world's population is always of great interest to the public, but our attention seems to be drawn towards its size rather than its age. According to the United Nations, the world's population is ...

Back in 1900, the average global life expectancy was just 32 years. Today, it's more than doubled to just over 73 years (with an average six-year increase in life expectancy around the world recorded ...

A global panel of scientists and community leaders shows how biology, lifestyle, and culture can work together to help people live longer, healthier, and more purposeful lives. The illustration ...