What counts as an “environmental” job?

It used to be that environmental jobs were easy to identify, involving folks working directly with the land, air, and water. But today, says Kevin Doyle of the Environmental Careers Organization, all manner of occupations can be thought of as green. That’s great news, of course — unless you’re trying to count exactly how many eco-jobs are out there. In his recurring career-advice column on Gristmill, Doyle asks: How do we define “environmental” jobs in 2006?