Anthropocene

The first Earth Day was celebrated on April 22, 1970. Since then we've discovered an incredible amount about the Earth in addition to doing the planet an incredible amount of irrevocable harm.
Apr 22, 2015   Vox
The mark of human civilization will last long after humans go extinct, according to this article looking at the anthropocene, or the age of humankind.
Feb 22, 2011   National Geographic