Periodically, in the vast spans of time that have preceded us, our planet’s living beings have been purged by planetary catastrophes so extreme they make…

We are in the middle of the first great mass extinction since the end of the age of the dinosaurs. That's the conclusion of a shocking…

Human activity dangerously compromises four of the nine systems that are key to maintaining the stability of Earth, report researchers. The study establishes planetary boundaries—thresholds beyond…