One detail in the latest assessment report of the UN Intergovernmental Panel on Climate Change: human aerosol pollution has partially mitigated the effects of greenhouse gas emissions and global warming. In our climate story of the week, Ryan Cooper, managing editor of The American Prospect and host of the Left Anchor podcast, explains what this means in the broader context of climate change.

→ It’s Actually a Huge Problem that Aerosol Pollution Is Plummeting