Koalas suffered a massive population decline that left them with dangerously low genetic diversity. However, new genomic research suggests their rapid rebound may be helping reverse some of that ...

Are box turtles in worse shape than herpetologists thought? University of Toledo researchers raise the question in new ...

America's cities have always been in motion, rising and falling with the tides of industry, opportunity, and migration. What's striking right now is the speed at which some once-thriving urban centers ...

The United States has enjoyed some level of population growth virtually every year for more than a century. But that doesn't mean every state is always growing in lockstep. Here's a for-instance: ...

Add Yahoo as a preferred source to see more of our stories on Google. New Mexico was one of five states in the U.S. that lost population last year as the U.S. growth rate dramatically slowed. While ...

Reindeer populations across the Arctic will likely decline substantially due to climate change in the next several decades with the North American population facing the highest risk, researchers ...

Wolves in Yellowstone National Park have experienced a 27% decline in population in 2025.

Animals that eat the carcasses of other animals can seem kind of gross. However, a recent study shows that scavengers, such as vultures or hyenas, can actually be good for human health. That same ...

From lonely deaths among the elderly to shrinking armies, falling birthrates are reshaping societies beyond the economic sphere.

Consecutive population declines are threatening to impact growth and weaken the island’s tax base, the head of the Bermuda Chamber of Commerce has warned. Marico Thomas, the chamber president, also ...

In Wisconsin and nationwide, population growth slowed in 2025 amid a significant decline in international migration.