Not Science Fiction: Earth Hit by Unknown, Extremely High-Energy Particle

An Extremely Powerful Cosmic Ray Hit Earth: We Don't Know Where It Came From

Earth's Earliest Rocks Forged by Colliding Tectonic Plates

Is it too late to keep global warming below 1.5 °C? The challenge in 7 charts - Chances are rapidly disappearing to limit Earth’s temperature rise to the globally agreed mark, but researchers say there are some positive signs of progress.