Earth, in its infancy, swirled with all the gases needed to construct life. But they couldn’t just assemble themselves into the building blocks of biology. That process, called “prebiotic ...

Human activity is reshaping life on Earth in profound and alarming ways. A landmark study published in Nature offers the most comprehensive synthesis to date of how five primary anthropogenic ...

Since its arrival on the Martian surface five years ago, NASA’s Perseverance rover has been busy scouring ... holder for ancient life, and scientists have long used it on Earth to help us ...