A new report this week from the U.N.’s Intergovernmental Panel on Climate Change presents a brutal picture of the devastation already caused by human-created climate change. It is a dire warning about a worsening future without swift, dramatic action to reduce warming. To slow down the pace of climate change, the report says, we need to stop emitting carbon dioxide altogether and dramatically reduce other greenhouse gas emissions. Most of this we’ve known for a long time. But what will it actually take to make the change? In this hour we talk about actionable political, social and technological solutions to climate change.  

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