This is great to hear. Most people don't know how bad concrete is terms of Co2. If you tell people that it's several times worse than aviation in terms of carbon, few people will believe you until they look it up.

We tend to focus on obvious sources of carbon: fuel and electricity, probably because it's something we all have some familiarity with. Agriculture and industry are hidden from our day-to-day lives, so few people are aware of their massive impacts on climate.