The world needs green concrete
Concrete is the second-most consumed material in the world. It's also responsible for 8% of global greenhouse emissions.
The bones of our modern world are sculpted in concrete. It's the second-most consumed material in the world (after water) and we use 30 billion tonnes a year of the stuff to create and maintain our roads, buildings, and infrastructure. It's also responsible for 8% of global greenhouse gas emissions – which is why, if we want to achieve net-zero carbon emissions by 2050, we need to come up with a greener way of making it.
This Circular article seems to do a good job of summarizing the opportunities and challenges. The good news is, it sounds like we may have the technology to make it happen. The information is UK-specific but I think it largely applies to other countries as well. I also think the Green Alliance report on Circular Construction referenced in the article is worth reading as well. Building construction accounts for a whopping 38% of all emissions – and the faster we can shrink that number, the better.