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.

Foreign ministers from Muslim nations on Saturday rejected calls by U.S. President Donald Trump to empty the Gaza Strip of ...

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." ...

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

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

China will provide childcare subsidies and make preschool education free as it tries to boost the country's declining ...

BEIJING: China said Sunday it will accelerate the use of artificial intelligence and big data in elderly and social care as ...

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

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

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

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