No species lasts forever — extinction is part of the evolution of life
At least five times, a biological catastrophe has engulfed the planet, killing off the vast majority of species from water and land over a relatively short geological interval. The most famous of these mass extinction events — when an asteroid slammed into Earth 66 million years ago, dooming the dinosaurs and many other species — is also the most recent. But scientists say it won’t be the last. Many researchers argue we’re in the middle of a sixth mass extinction, caused not by a city-size space rock but by the overgrowth and transformative behavior of a single species — Homo sapiens. Humans have destroyed habitats and unleashed a climate crisis. Calculations in a September study published in the journal PNAS have suggested that groups of related animal species are disappearing at a rate 35% times higher than the normally expected rate. And while every mass extinction has winners and losers, there is no reason to assume that human beings in this case would be among the survivors. Micha...