What did I just watch and the smug ill-informed interviewer.
https://twitter.com/AvgJoesJoinery/status/1453033917414510600
Plant more trees, it is a renewable source. New Zealand forestry industry has grown and we are always planting new trees in area's and yes cutting some down in others as they mature.
Concrete is a huge carbon foot print in comparison from manufacturing the mix to mining some of the ingredients to there is also chemical reaction to when the concrete is setting it is setting.
These are limited resources that we can not simply go out and plant more iron ore silicon and calcium etc like we can with planting trees we have to extract and mine for these elements.
However I will admit in some countries they are cutting down forests without replanting and I do disagree with that.