Modern humans originated from at least two ancestral populations that diverged and later reunited before spreading across the ...

Governments, international bodies and researchers rely on global population data for resource allocation and infrastructure planning to disease epidemiology and disaster risk management. In a study ...

All of the United States’ net population growth between 2022 and 2023 was due to immigration, according to the Migration ...

An analysis of the semicircular canals in Neanderthal ears reveals evidence of a 'bottleneck' event, leading to a reduction ...

A comprehensive study of U.S. butterfly populations shows dramatic declines in most species, but Pacific Northwest ecologists ...

A study, published Thursday in the journal Science, found that 22% of butterflies in the United States disappeared between ...

“Back in 2008, natural increase — or the difference between births and deaths — accounted for 77% of Indiana’s growth," said ...

Two-thirds of studied species declined by more than 10%, the study said. Butterfly populations have dropped by 22% across 554 recorded species in the United States, according to a new study in the ...

A genetic study of Asian elephants in northern Cambodia reveals a larger and more robust population than previously thought, ...