For over a quarter of a century, there has not been a moment when all humans were together on planet Earth, and that’s thanks ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Illustration of the Earth-like exoplanet Proxima Centauri b orbiting the star Proxima ...

Content warning: this story includes discussion of self-harm and suicide. If you are in crisis, please call, text or chat with the Suicide and Crisis Lifeline at 988, or contact the Crisis Text Line ...