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 ...

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 ...