Negotiators agreed to a three-track process designed to give some countries more time for the phase-out process than others. It was the best way to get all nations on board, says Mario Molina, a scientist who shared the 1995 Nobel Prize for chemistry for his work on CFCs.
“I think it works,” Molina says. “The reason perhaps is best explained by using India as the example. They claim they cannot [quickly] replace the HFCs they are using now, because that would not allow their many poor families to have air conditioning. The replacement is a bit more expensive and the new compounds are not yet available.”