For a variety of reasons, geriatric care experts told BI it's been hard attracting new doctors to the field. It's a problem ...

Neanderthal fossils show a major population drop 110,000 years ago. Researchers link this to reduced genetic diversity.

The Federation for American Immigration Reform estimates that, as of March 2025, there are approximately 18.6 million illegal immigrants living in the U.S.

An alarming new study shows the overall population of butterflies is declining sharply. NBC News' Maya Eaglin spoke with ...

A UN population report pours cold water on Elon Musk's fears that declining birth rates will lead to "population collapse." ...

As spring approaches, the annual "Kitten Season" brings a surge in the outdoor cat population, leading to overcrowded animal ...

Researchers at Rice University have uncovered a critical link between rising temperatures and declines in a species' ...

Foreign ministers from Muslim nations are rejecting calls by U.S. President Donald Trump to empty the Gaza Strip of its ...

The population wintering in central Mexico's forests occupied 4.42 acres, up from 2.22 acres during the previous winter.

These women are now in their early 30s, the age at which women have the highest fertility rate, meaning the time is "ripe for ...

Almost 60% more litter can be found in the UK's coastal communities than in inland locations, according to new research.