I think it's more to do with the fact that the rhetoric around climate change has shifted. Now the official Green Party stance is that it is the most urgent iss

I think it's more to do with the fact that the rhetoric around climate change has shifted. Now the official Green Party stance is that it is the most urgent issue of our time and must be combated by any means necessary. Of course, this conflicts with their (former) anti-nuclear stance, and they've been repeatedly criticized for this hypocrisy. I've even heard young environmentalists speculate that the Greens were secretly in bed with the oil companies.