https://skeptoid.com/episodes/4813 has an interesting one about concrete. It is a *HUGE* challenge to make existing buildings more efficient. The construction of *new* buildings (which can be coded to be more efficient) is *still* a monster on emissions. :(
Skepoid has a number of episodes on this topic you may find useful as a resource, complete with references in the transcripts.
@Romaq @hausfath Brian Dunning is a GOAT