We already have the technology to build net zero carbon buildings. But the building trade is both notoriously conservative and extremely effective at lobbying to protect their profits (at least in the UK).
Superinsulated, almost airtight houses with ground and air source heat pumps and solar PV should be mandatory, as should banning of all in home boilers in new builds.
That’s all easily achievable even without some of the recent novel inventions such as engineered wood: https://www.nature.com/articles/nature25476
We have to stop treating the atmosphere as a free line of credit with no limit that we can just dump all our externalities into, or we’ll find out very soon that there is no such thing as an externality at planetary scale. We’re all in the same hermetically sealed box, breathing each other’s farts.
Sorry for the rant. It’s hard to stop once the despair creeps in.
In addition to that, buildings should be made to last. Badly designed or built houses can be just ticking time-bombs for mold and other air-quality issues, and certainly not sustainable.
All religions teach their followers to show compassion towards the less fortunate of their society - and societies of all religions regularly fail to do this. Ideologies shouldn't be judged solely based on teachings, but also what actually happens. If there was an exceptionally good religion, it should deliver exceptionally good results. Religion and income inequality seem to have little correlation, which leads to a conclusion that they're all equally useful or useless in this practical aspect, no matter what other differences they may have.