Alexi Huntley Khajavi is the chief marketing officer for NatureAir, a small airline that serves destinations in Costa Rica and Panama. Your NatureAir flight comes with an unusual guarantee: It won’t leave a carbon footprint. I asked Khajavi to explain.

Elliott is consumer advocate
WHAT'S YOUR PROBLEM? If you're having trouble with a travel business - any business - and you've reached a dead end, maybe I can help. Send me an