“I… I Was Carbon Pricing / CBAM Was There / Two Worlds Collided / And They Could Never Tear Us Apart” (INXPORT, 20XX)

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This week our Bonus episode includes Frankie, Luke and Tennant having a look at some sharp analysis in Carbon Brief on the impact of the Iran War on global emissions. Run, don’t walk, over to www.letmesumup.net and subscribe to our Patreon.

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Nothing like the 300ish page Intergenerational Report launched earlier this week for an appetiser this week and Frankie in particular has been hanging out for this one. The treatment of climate and energy divided lots of folk (just like the rest of the report) but your intrepid hosts - or at least one of them - maintain IGRs are an important chance to push bold reform!

Our main course

It’s pet indulgence week this week as we dive into a cracker from Wolfram et al 2026 who bring coordinated CBAMs into the frame for their own version of the Bill Nordhaus Climate Club.  Is this one more convincing? The big idea: there are lots of economies doing carbon pricing cautiously. If they work together, recognise each other, and border-adjust non-members, they can raise carbon pricing ambition without losing their industries.

We also refer way way back to Episode 20, Watch out, free riders! It’s the Bill’s Angels’ where we covered Climate Clubs 1.0, for your additional listening pleasure!

And that’s it for now, Summerupperers. There is now a one-stop-shop for all your LMSU needs: head to

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