In 1960, three scientists published a paper in Science that calculated, with deliberate provocation, that the human ...

Researchers formulated a mathematical equation that unifies 12,000 years of human population growth and points to an alarming ...

Japan’s population fell by more than 3 million over the past five years, a record drop that underscores the depths of the country’s accelerating demographic crisis.

In a new open-access study that I published with my late colleague Kostya Trachenko from Queen Mary University of London, I propose a surprisingly simple nonlinear mathematical equation that unifies ...

Nearly half of the biggest US cities reported fewer residents after COVID. By 2024, many had begun adding residents again.

U.S. residents are aging and having fewer babies, with fertility rates at a record low and trailing what’s needed for the ...

Fernández-Villaverde: Imagine you have a population of 1 million people. How many children need to be born for that ...

Over the course of 13 expeditions and other efforts between mid-2025 and mid-2026, scientists found hundreds of previously ...

The world's urban population increased by 785 million people between 2000 and 2020, but that tells only part of the story.

About six-in-ten Americans say countries around the world, including the U.S., will not do enough to avoid the worst effects of climate change. This growing pessimism is driven by Democrats. Fresh ...