Are grandparents greener than her kids and grandchildren?

It always amuses me when I see yet another set of data about the relationship of 'greenish' behaviour and age. Two things always come to mind. Firstly, the level of difference between the ages is normally small. Secondly, it is lifestyle not age that is the greatest determinant of green behaviour. Perhaps the second point explains the first.

Still, if you need some data for a presentation then E-Marketer provides the goods. Dick Stroud