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 ...
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. But that momentum faded.
U.S. residents are aging and having fewer babies, with fertility rates at a record low and trailing what’s needed for the ...
Why is the birth rate declining in every country on Earth?
The world's urban population increased by 785 million people between 2000 and 2020, but that tells only part of the story.