When viewed from the standpoint of geologic time, what is humanity's ultimate contribution to the planet? As destructive and game-changing as the cataclysmic events separating whole epochs, have we ushered in an Age of Man with our agriculture, industrialism and war? What was the world like before our steam-powered industrial ascension? In this episode of Stuff to Blow Your Mind, Julie and I ask hard questions about humanity's relationship with planet Earth. Will we continue to remake the world as we see fit, or will we become true stewards of the planet?