Add Yahoo as a preferred source to see more of our stories on Google. Baby boomers are aging into rusty infrastructure, finding retirement homes to be a new web. (Maskot—Getty Images) A selection of ...

It's not really a population pyramid anymore, it's more of a tree. There are lots of older people in this society. Some of that is longevity. And so you can see this narrowing here at the bottom, and ...

According to Elon Musk, the world’s richest man and the father of at least a dozen children, the greatest potential risk to the future of civilisation is population collapse. Taking a very long-term ...

We seem fascinated by generations, using them to evoke shared experiences and to push us apart. Demography, the science of population change, defines a cohort as a group of people born at roughly the ...