Exploding stars in near-solar space may have triggered at least two mass extinction events in Earth's history. An analysis of the frequency of supernova explosions in the Milky Way, led by ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Violent supernovas ...

With fewer women having babies, scientists say, humans in most countries face extinction. Now comes more bad news on that front: Human populations need at least 2.7 children per woman—a much higher ...

The planet is on the precipice of the sixth mass extinction event. Unlike previous mass extinctions caused by natural events such as asteroid collisions, volcanic activity, and climate change, the ...

New research identifies 10,443 critically endangered species worldwide, with effective protection strategies available if funding and political will follow. More than 1,500 species, or 15% of the ...