- Jan 8, 2011
- 22,361
As of September 2020, 452 cities and 22 regions had made commitments to slash and offset their planet-heating carbon dioxide emissions, reaching net-zero CO2 pollution by the middle of the century. It’s all part of a race to stop the worst effects of climate change from becoming reality, which scientists say requires the entire world to nearly completely gut greenhouse gas emissions by that deadline.
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