John Oro April 28, 2014 CULTURE Christoph Gielen documents humankind's "huge footprint" John Oro April 28, 2014 CULTURE See more: These Are Some Mesmerizing Photos Of The Urban Sprawl That's Devouring The PlanetRelated PostsWelcome to the Anthropocene: Humankind's layer on the Earth When did the Anthropocene begin?Did the Roman Empire & the Han Dynasty begin the Anthropocene?