Beyond the obsession with CO2: To prevent climate disaster, these pollutants need the world’s attention now.

There’s a growing sense of excitement among climate change experts, and it’s not about the jaw-dropping low prices of renewable energy that will help reduce the world’s CO2 emissions. Rather, it is an opportunity — the narrowest of windows — to make a huge, measurable reduction in the temperature of earth by reducing emissions of just a few pollutants.

If we time it right, we cool down the planet by 1 degree C this century compared to…