Scientists have long treated mass extinctions as events locked deep in the fossil record. That framing now feels less distant ...

(CNN) — Humans have wiped out more than 100 species — with many more on the brink or experiencing large declines in population. Some scientists have argued that we have entered a “sixth mass ...

Humans have wiped out hundreds of species — with many more on the brink or experiencing large declines in population. Some scientists have argued that we have entered a “sixth mass extinction” event ...

The idea of a creeping mass extinction has served as one of the scary subplots of our ongoing climate drama. For decades, scientists have warned that we may be on the cusp of, or already entering, the ...