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Pricing in externalities is probably the only way we can solve carbon emissions, and would still be very difficult. We would need global participation, otherwise carbon emissions can just be outsourced to other countries. Also, we need to decide the price of emitting carbon. Perhaps survey economists from every country and aggregate the answers somehow.

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> We would need global participation, otherwise carbon emissions can just be outsourced to other countries

You can simply add a tax at entry to match your own carbon tax until evening rules are added into trade deals. The fact that such a tax is not in place in neither the USA nor the EU is proof enough to me that neither is serious about stopping global warming.

How would you determine how much carbon was used throughout the entire supply chain of an imported product? If the product is produced domestically, the government can enforce every business to measure its carbon emissions, but cannot do the same for imported products

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