For the first time in more than a century, migrating salmon have climbed close to the headwaters of the Klamath River's most far-flung tributaries, as much as 360 miles from the Pacific Ocean in south ...

Deep beneath the ocean, scientists uncovered thriving microbial life in one of Earth’s harshest environments—an area with a pH of 12, where survival seems nearly impossible. Using lipid biomarkers ...