• Question: when did global warming start

    Asked by Thinh Ann to William, Karen, Jasmine on 16 Nov 2018.
    • Photo: Karen

      Karen answered on 16 Nov 2018:

      Scientists think that human-caused global warming started in about the year 1830, when humans began to industrialize. Industrializing means that we started to build factories and burn fossil fuels, which started to release greenhouse gases that trap the sun’s heat on the earth and make it warmer!

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