At last month’s Global Climate Action Summit, Microsoft announced it is the first large corporate user of a new tool to track carbon emissions associated with raw building materials. The technology giant is piloting the Embodied Carbon in Construction Calculator in the remodel of its 72-acre Seattle campus.

The tool, called EC3, is open-source and free to all users. It runs on Microsoft Azure and was developed by Skanska USA Building Inc., with the University of Washington Carbon Leadership Forum, Interface and C-Change Labs (ENR 7/23-30 p. 14) .