Southwest Airlines recently hit a milestone in our quest to fly more efficiently and greener by successfully implementing autothrottles and VNAV (vertical navigation) modifications to our entire 737-700 fleet. Now, if you don’t understand what that sentence means--don’t worry, you aren’t alone.

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Want to go Green? No, I’m not talking about leprechauns and four-leaf clovers. This is about being environmentally friendly. Today Southwest Airlines announced plans to tackle emissions reductions by employing a gee-whiz navigation technology called RNP (Required Navigation Performance).