Most of the world's major waterways have been diverted or dammed or otherwise manipulated - in the United States, only two per cent of rivers run unimpeded - and people now use half the world's readily accessible freshwater runoff.
Elizabeth KolbertZalasiewicz is convinced that even a moderately competent stratigrapher will, at the distance of a hundred million years or so, be able to tell that something extraordinary happened at the moment in time that counts for us as today. This is the case even though a hundred million years from now, all that we consider to be the great works of manโthe sculptures and the libraries, the monuments and the museums, the cities and the factoriesโwill be compressed into a layer of sediment not much thicker than a cigarette paper.
Elizabeth KolbertSome of these species that are now no longer with us were killed off by a fungal disease that was moved around the planet by people.
Elizabeth KolbertHumans will eventually become extinct. People treat that as a radical thing to say. But the fossil record shows us that everything eventually becomes extinct. It depends what "eventually" means. But the idea that were going to be around for the rest of global history...I don't think there's any scientist who would suggest that is true. It could be millions of years from now. We may leave descendants that are humanlike.
Elizabeth Kolbert