No X-Man is an island.
In a rare, enjoyable moment of AvX, Colossus convinced the Electric Legion to power Eastern Europe. The Phoenix may have crashed and burned away what didn't work, but it left behind a climate crisis.
In Storm #3, Forge also tried to mitigate the effects of climate change with a rain machine, but faced a moral quandry.
Do they still have this commitment on Krakoa? Magneto recently outlined an economic strategy involving Krakoan Flower Drugs in X-Men #4. Could Krakoa's enterprise expand to renewable energies and sustainable farming?
And if it did, where would it lead? Consider the debate between Cypher and Storm of property rights and Krakoa's arrangement with the Savage Land as a flower garden. Hordeculture represented environmentalists with no concern for humanity. What can the X-Men do against them?
Should the X-Men work on climate change? How could they do it? Which X-Men are best equipped to solve this problem? Which X-Men are climate deniers?