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 ...

The US Census Bureau recently released estimates of the 2017 US population by sex and year of age. That demographic data is often represented in a population pyramid. The US population pyramid clearly ...

Many companies have touted the promise of population health, or being able to influence a group of people’s health outcomes. But the process of getting there, from collecting data to changing ...

Last Wednesday, the Associated Press released an analysis of data from 25 states showing an 8% decline in the number of births in just over one year, between December 2020 and February 2021. This news ...

For almost all of human history, the Earth’s population has skewed younger. But since the last World Population Day on July 11, a major shift occurred: There are now more people age 65 and older than ...