One thing is becoming clear: What we are doing isn’t working. In April of this year, the level of carbon dioxide (CO2) in the atmosphere was 410 parts per million (ppm). The last time CO2 levels were over 400 ppm was during the mid-Pliocene era 3 to 5 million years ago. Despite moves to renewable energy and attempts to improve efficiency, the global manmade output of carbon dioxide (CO2) was a record-setting 32.5 gigatonnes in 2017—a 1.4 percent increase over the previous year. The rise was...
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