"In 1800, every human on the planet had a corresponding 80 kg of mammal mass in the wild. Wildland mammals outweighed humans in an 80:50 ratio. Today, each human on the planet can only point to 2.5 kg of wild mammal mass as their “own.” Let that sink in. You only have 2.5 kg (less than 6 pounds) of wild mammal out there somewhere. A single pet cat or dog generally weighs more. Not that long ago, it was more than you could carry. Now, it seems like hardly anything! I especially fear the implications for mammals should global food distribution be severely crippled."
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Thomas W. Murphy, "Ecological Cliff Edge." Do the Math, August 18, 2023.
https://en.wikiquote.org/wiki/Overpopulation
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Overpopulation
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