John_Morrissey that's a very valid question. To help put the 325 gram figure in context, I'll point you to this blog we posted back in October to announce general availability of this app: Track and act on your cloud emissions with the Emissions Impact Dashboard for Microsoft 365, now GA - Microsoft Community Hub
Within that blog we link to a new white paper (https://aka.ms/m365-emissions-whitepaper) that will be very helpful here. One of the key points is that Microsoft has invested heavily in renewable energy to account for our datacenter energy consumption, helping to significantly reduce our market-based Scope 2 emissions. The white paper also provides a global average carbon intensity figure that is similar to what your colleagues are seeing in the app. Hope this helps, and happy to answer any other questions.