With each passing year, emissions from cars keep rising. Global carbon emissions from passenger road vehicles measured 2.5 gigatonnes in 2000. By 2018, the most recent year for which data is available, that had increased to 3.6 gigatonnes. The reason? People keep buying gas-guzzlers. Around 15 million new vehicles were sold in the United States in 2021, up 2.5 percent from an unusually low number in 2020. In the UK, 1.65 million new vehicles rolled off dealer lots. The good news? Some people are trading
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