Amen, schismatic.
"Aviation is the largest contributor of greenhouse gas" is the common attack these days.
Hmmm....depending on whose figures you believe, the numbers are anywhere from 2% to 4%.
I saw on a documentary that the largest contributor to greenhouse gas comes the the generation of electricity (50% - 60%).
The people attacking aviation are those who want tax imposed on aviation fuel (in the UK).
It's all about the Benjamins