Sunday 1 January 2023

Only Humans Would Set Up a Committee to Mark Their Own Epoch

Most experts agree that the geological Holocene epoch is over and should be replaced by the Anthropocene (https://www.theguardian.com/science/2023/jan/01/theres-been-a-fundamental-change-in-our-planet-hunt-on-for-spot-to-mark-the-start-of-the-anthropocene-epoch). The Anthropocene label recognises that humans have become major players (on a par with dinosaurs and planetary collisions with asteroids) in terms of their impact on the Earth. It seems a bit arrogant for humans to want to label their epoch with a start date and a location. The start date is less problematic (even if it's somewhat arbitrary). Fundamental changes in the Earth's geology became most notable shortly after the 2nd World War. This period was characterised by massive economic and industrial growth. This growth resulted in many changes in land use and a surge in 'greenhouse gas' emissions. Selecting a place to epitomise the start of the Anthropocene, seems, however, weird. A self-appointed Anthropocene Working Group is currently considering selecting one of nine sites/objects. They include coral reefs in Australia, layers of silt from Canada and ice cores from Antarctica. The whole point of an epoch is that its effects are felt over the entire planet. I bet the dinosaurs never argued about the start of the Jurassic or where its first changes occurred!

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