If aliens came to Earth 100 millions years in the future, what traces would they find of long-extinct humanity, and our brief, dramatic reign on the planet? From this imagined vantage point, geologist Jan Zalasiewicz looks at the future of the earth in a completely unexpected light. What kind of fossils will humanity leave behind? How thick a layer will the 'human stratum' be? As thought-provoking as it is engaging, The Earth After Us explains the geological mechanisms that shape our planet, and also offers a sobering verdict on our species and its relationship to its home.