The human population of Earth could collapse and be cut in half in just 40 years if the conditions on the planet change, ...

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

Global population growth may be more sensitive to environmental and societal pressures," Alessio Zaccone told Newsweek.

The ideal number of humans on Earth is around 2.5 billion and a major study explains what that means for our future.

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 ...