This post examines a correction to a seminal paper by Oxford University scientists Poore and Nemecek on the environmental footprints of food. It shows that, of all the products we make, including the massive amounts of cement and steel used for construction, beef is categorically responsible for the most GHGs, by a very wide margin. Continue reading A mammoth adjustment to beef’s carbon footprint
Globally, we produce way less beef compared to steel and cement and yet the beef industry’s total carbon footprint is as large* as that of the other two industries. This is because the carbon footprint of beef, per kg of product, eclipses virtually everything else on the planet. The “carbon footprint multiplier” for beef is 100 while for cement and steel it’s around 0.8 and 2, respectively. While plans are in progress to decarbonize cement and steel, we need to put beef in perspective.
*It’s actually a lot larger if we factor in carbon sequestration on land formerly used for beef.
Continue reading Perspective on the carbon footprints of steel, cement, and beef
When it comes to water usage, there are several different angles to consider: blue water, green water, and water scarcity, for example. There are also significant differences in the reported water footprints of various consumer goods. There is, however, fairly universal agreement on the best way to reduce our water footprint. Continue reading The best way to reduce your water footprint
The Green Stars Project 