This rate of substitution — the current adoption [2] of alternative cement — avoids about 79 metric tons of carbon dioxide emissions per year. (drawdown.org)
This equates to a health benefit of between $ 40 and $ 93 per metric ton of carbon dioxide reduction. (newscenter.lbl.gov)
All that flying and trucking adds thousands of metric tons of carbon dioxide to the atmosphere. (scientificamerican.com)