Greetings from São Paulo where corporate executives from around the world have gathered ahead of this year’s United Nations climate talks—known as COP30. This is my second stop in a two-week trip to Brazil as I try to understand how the world is approaching climate change at this moment.

People always ask me whether it’s really worth spending so much time and energy at COP. This year, I’ve heard that question even more than usual given the rapid developments in the U.S.—from the AI-linked rise in power demand to the Trump Administration’s ongoing assault on climate policy.

My answer has never been clearer: to understand the state of climate efforts requires getting out of the U.S. —now more than ever. Acquiring a true sense of where things currently stand almost requires going region b

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