Transcript of "A concrete idea to reduce carbon emissions"

Concrete is the second most used substance on earth after water, and for this reason, it has a significant environmental impact. If it were a country, it would rank third for emissions after China and USA. But in fact, concrete is an intrinsically low-impact material with much lower emissions of CO2 and energy per ton than other materials like iron and steel, even things like bricks. But because of the enormous volumes we use overall, it contributes to about eight percent of man-made CO2 emissions.