Every year, gray whales embark on one of nature’s most epic migration journeys. Here’s what we know about it, according to ...

At least five financial groups or think tanks have published 2025 projections about "net migration" — how the number of people immigrating to the U.S. compares with the number moving out of the ...

Net migration to the UK reached record levels in 2023 but has since started to fall, driven by a drop in the number of family members coming on study visas along with fewer arrivals on resettlement ...

CU Boulder researchers challenge long-held assumptions about the relationship between bird migration and the process by which new species arise Every year, billions of birds take to the skies, riding ...

The human species is on the move. Last year there were more people living outside of their birth countries than at any other time in modern history, according to the United Nations. It’s a sea change ...

President Donald Trump said he has fulfilled one of his campaign promises: More people are leaving the country than immigrating to it, he said. “Promises made. Promises kept. Negative net migration ...