ChristiaanJ talks about
:
If anything, your flight may do some good, because high-level persisting jet contrails add a small amount to the earth cloud cover, keeping down the temperature variations.
This is called "Global Dimming" and the proof of it happened when there was no air travel in the US for several days in September 2001. Temperatures rose and it was attributed to this phenomenen. It must be true because it was on "Horizon", who also predicted the Asian tsunami!
Lets keep flying!
