The Santa Marta conference on phasing out fossil fuels has just wrapped up, and by most accounts, it was a meaningful step forward. For the first time, 57 countries — representing more than half of global GDP — gathered explicitly to discuss ending the fossil fuel era. Colombia presented the world's first national roadmap for full phaseout. A new international science panel was launched. Political momentum is building. At least, that is the talk. The follow-up location is nothing short of an attack on the climate: Tuvalu.