"One million species face extinction, U.N. report says. And humans will suffer as a result," observed The Washington Post on May 6, 2019. We surely have not yet run out of sit-up-and-take-notice warnings about human impact on the climate and therefore on all of life.
When I was in sixth grade, some teachers at Cayuga Heights Elementary School took it upon themselves to help us understand "one million." They printed one million x's on computer paper and posted the sheets along the ceiling of the long hallway that extended from the gym to the library. It took five minutes to walk that hallway, and gazing up at those tiny gray marks was a mind-boggling experience.