I personally hope bishops will focus on all aspects of social doctrine as defined by the Church. I simply believe they can get more mileage if they focus their argument in the direction of being good stewards of what God has given us rather than global warming.
I think it is sometimes good to focus on more specific issues that are extremely egregious (or involve widespread harm) – like medical abortions and not just on “Thou shalt not kill.” We need to hear both the general principle and the application of that to specific issues, at least now and then.
If the bishops were focusing more than 20% of their writings on global warming, then I’d be saying enough already, let’s hear about the other issues.
However, I think the Church in general has not reached nearly enough of a level on speaking out on the topic of global warming, bec even tho Catholics are better than non-Catholics on this issue, nearly a third of Catholics in America still reject Church advice on it (either claiming it is not happening, or that it is natural and there is nothing we can do). Also, even though 2/3 of Catholics (in America) do accept the science on it and are concerned about it, my sense is that not a whole lot of those Catholics are actually doing much to mitigate it.
And at the local level, I never hear my priests speak out about global warming, and I’ve been straining to hear one word about it for over 22 years. I did hear a priest in S. Francisco say something about it when I was at a conference there some 3 years ago.
So, yes, there is a need for the Church to speak out on global warming a lot more, until it finally trickles down to the parish level, at least to the level of mentioning it once to every 100 times they mention abortion – because global warming to me is the mother of all life issues, as it is projected to annihilate most, perhaps all of life on earth, if we continue our “business as usual” path.
What good it is to work to save lives from abortion or starvation, only to destroy them through global warming? Lots of charities working in Africa and other poor nations are asking that question as we are in the beginning stages of seeing some harmful effects of global warming (feeling all their good work is becoming unravelled by the negative effects of global warming).
However, because the harms from global warming are very slow in coming (projected for decades and centuries from now) we are perhaps becoming inured to them. Also we see our personal role/responsibility as very small, since it is the combination of everyone’s emissions. It’s nowhere near like having an abortion, even tho it’s possible an individual’s lifetime’s worth of GHG emissions could over several 100s of years (and certainly over 1000s of years) be responsible for killing one or more people.
There’s another issue that makes it important for bishops, priests, and laity to speak out on global warming and actually do great things to mitigate it. And that is nearly all measures that mitigate global warming also mitigate a host of other environmental problems – local & regional pollution (including miscarriages and birth defects), finite resource waste, ocean acidification, etc. And mitigation also saves money and helps the economy and our personal pocket-books; it can be done without lower living standards or productivity down to 50% to 75% GHG emissions reduction (at least in America). Mitigation of global warming can also be done in ways that improve people’s health and even reduce crime.
Global warming is an umbrella issue that has very much to do with being good stewards of creation in general. And because of its seriousness, people would be more inspired to mitigate it, and in that process mitigate a wide range of other environmental problems. It was the issue that go me off my duff 22 years ago to do something.