sweet

Google continues to push for more efficient data centers.

but a suggestion

They really need to publish in terms of  kg CO₂e per unit computation.  Some of their data centers are largely run on hydropower (there are issues of how much extra CO₂ is emitted in the lakes behind the dams, but those are complex issues and can probably be ignored for existing dams) and others are probably in regions with a high percentage of power from the burning of hydrocarbons. 

Efficiency is great and Google is a fantastic example, but power sourcing can be even more important.