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Humans are as "Earth-changing as a meteor strike," says a researcher who has proposed a new start date for the so-called Anthropocene, or "human epoch."
"Game of Thrones" often feels like it's set in a real world. Feed the illusion with these fascinating geologic maps created by Stanford researchers.
Artist David Thomas Smith uses heavily manipulated satellite images of major cities as a vehicle for revealing humanity's excesses.
Global warming and a host of changes caused by human industry have ushered in a new geologic epoch, geologists say.