"'Holocene' used to be the accepted term for the period we still live in, which began when the glaciers started retreating more than 12,000 years ago."
Human life accounts for the geological equivalent of "a blink of an eye." But geologists say they've found evidence that we've already left a permanent mark.
Dr. Warren Hern is known locally as the hero of the Homestake Valley, the chairman of the Holy Cross Wilderness Defense Fund whose years-long fight prevented a diversion project from sending more Eagle County water.
The UN estimates the global population will pass 8 billion people on Nov. 15, 2022. From the Stone Age to today, here’s how things spiraled out of control.