I think driving a utility vehicle like a Van, or camping in a Westy rather
than a larger RV is "doing something"  Take a gander at any interstate in
the US for a look at 'Conspicuous Consumption'  Or spend a week in the
desert southwest in the winter and listen to the thousands of huge diesel
pusher motorhomes go 'whooshing by" at 80mph and 8mpg..
  If we in the US are wanting to do something green, we could dump our "Big
Oil" government.
 Or,  the most effective way of all, world-wide, would be to simply have
fewer children...If you have 5 or 10 kids already, try to talk them into
having one fewer, each..  Reduce your carbon footprint by a huge amount by
not having that kid...
  Ducking,
  Don "the D.I.N.K." Hanson
  DINK= Dual Income-No Kids.(.except no income at present)