"Passenger offsets purport to cancel out carbon dioxide emissions ton for ton through investments in green projects. But critics say there is no transparency about how companies measure whether that happens."The headline makes it seem like all offsets are bad. But the above quote tells us the real problem: the offsets that people are buying are questionable. That just means we need better offsets, not that we need to abandon them altogether.
Paying More for Flights Eases Guilt, Not Emissions - NYTimes.com: