This is an outright lie. Google's carbon footprint is still positive, but their net greenhouse gas footprint is negative now, according to some particular acco

This is an outright lie. Google's carbon footprint is still positive, but their net greenhouse gas footprint is negative now, according to some particular accounting scheme which posits that 1 ton of methane is equivalent to 34 tons of carbon dioxide. Carbon dioxide and methane are not equal, and arguably not even equivalent, since methane's impact is short term compared to that of carbon dioxide. That's why the equivalence ratio depends on the time horizon chosen. (100 years is customary, but if Google assumed 20 years, that makes the numbers balance even more cheaply.) So if the headline said "greenhouse gas footprint", it would be technically correct, but misleading. The way it's written, it's a lie.