The human population of Earth could collapse and be cut in half in just 40 years if the conditions on the planet change, according to a chilling new doomsday study. The research – published in Chaos, ...

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

Earth's population currently sits at 8.3 billion people – but it could crash within the next 40 years, experts have warned. Scientists say that, in a worst–case scenario, humanity could potentially be ...