I’d say the answer is:
a) Would what this person thinks on this topic change your opinions of him or her?
AND
b) Regardless of what you think, would your opinion on the topic change his/her opinion of you?
AND
c) Is what each you thinks about what the other one thinks important to you?
On some topic, at least, the answer to (c) will be yes for at least one of you. Don’t let anyone fool you about that one! Two people who believe that neither could possibly differ on any important topic whatsoever in any important way are probably mutually infatuated, but at least somebody is either delusional or semi-catatonic. The only question is whether one or both of you consider the topic of global warming and possible human contributions to be one of those important topics. There are certainly happily-married Catholic couples who combine just about every combination of opinions on this. The difference with the ones who differ but are happy is that this is a topic they have decided they are willing to be mutually tolerant about.
Very good answer.
And it really seems to me not to be a big problem if they disagree on global warming, as long as they agree that stewardship of God’s creation is good, or failing that, that saving money is good & not usessly wasting it with no benefit at all, not even splurge-fun.
We had a little environmental committee at my old parish (from about 1992 to 2002 when we moved away). In the late 90s a person joined and that same month I suggested that we have our next program on global warming (we had had programs on all sorts of topics – pesticides harm, composting, acid rain, recycling, etc, but this would be the first on global warming). She said she didn’t believe in global warming and she was against it. We got into a hot argument – a “hissy fight” as she fondly referred to it later.
Finally I splurted out – well, it doesn’t really matter, because the same things that mitigate global warming also mitigate a host of other environmental (and financial) problems. For instance, we could do it on water conservation, and since water requires energy to pump and heat it (usually fossil fuel energy), conserving it not only saves water and money, but also reducing greenhouse gas emissions and other pollution.
She loved the idea and we went ahead with it, becoming friends with one area we agreed to disagree on. We had an “April Showers” program at our church, getting the kids & families involved, spreading ideas on how to conserve water. We later went on to found a charitable conservation program for our city. She went to the Water Dt, and found out our water table had gone down 800 feet in the 100 years of its use, and they were really worried about our water depletion. Who knew? We bought low-flow showerheads and other water-saving devices whole-sale, created a packet and brochure, put them in the Water Dept at City Hall, asking for a $10 donation (the cost of the packet) so we could continue the campaign. We started with a city seed money grant to buy the initial supplies.
I moved away before our next project, which was to be energy efficiency. But anyway I can say that my $6 low-flow showerhead (which we bought in 1990, did a bucket/stopwatch test and found it saved half the hot water & we could not tell the differece) has saved us $2300 in the ensuing 23 years in water and gas/electricity to heat the water. I don’t think bank interest or the stock market (as a whole) does that well.
And nearly every other global warming mitigation measure we have implemented over the past 23 years has likewise not cost, saved $$ immediately or in the short-run or long-run, reducing our GHGs by over 60% and saved us many $1000s, and will be saving us on into the future. Our Volt (which is run on our 100% wind-powered electricity) will be paying the difference between it and the car hubby wanted within 6.5 years and go on to save us over $1000 a years. And I’m not even counting that we’ve lived within 1 or 2 miles of work for the 44 years of our marriage. And now we’re planning our solar panels, which will cut our electric bill in half and save and save – about a 12.5% return on investment.
We are sitting pretty financially now with all those savings on into the future, well-poised for retirement. And that also reduces marital strife, which we all know can flare up over money issues.
And my husband is not into the global warming issue one way or the other. Bec he hears me talk about it a lot, he tells me everyone else in America is into it, and I argue with him that’s not the case and he tells me everyone will be into it once they learn about it, and to shut up

And that’s about the extent of our marital strife
