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- Humans have had such a huge impact on the Earth that some geologists think the human era should be enshrined in the official timeline of our planet.
They want to give the age of humans a formal name, just as scientists use terms like the Jurassic or the Cretaceous to talk about the age of dinosaurs.
But some researchers think that formally establishing an "Anthropocene" — as many call it — as part of the geologic time scale would be a big mistake.
