Today, thousands of species of wildlife sit on the verge of extinction because of our actions. We have destroyed their habitats, fundamentally altered the climate by pumping carbon into the atmosphere and hunted down once-massive populations to groups so small that we can count the surviving animals on our fingers. So great is this anthropomorphic threat that scientists argue that we’re currently in one of the worst mass extinction events in the history of the world — up there with a cataclysmic volcanic eruptions and collisions with asteroids.   (Robert Gebelhoff, Wash. Post, 10/17/18)