Source: Drew Kann, CNN, 12/9/20

From roads and buildings to cars and plastic, human civilization is built on lots of stuff. But roughly how much stuff have we actually created? And in the process, how much of the natural world have we consumed or destroyed? A new analysis finds that on both counts, it's a lot ... so much, in fact, that these materials may now outweigh all of the living things left on Earth. 

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