To many, environmental groups are thought of as a charity where blue jeaned defenders of Mother Earth tackle big powerful corporations.  But it may astonish them to know that many of these Green groups are rich beyond their wildest dreams.  According to columnist Alan Caruba, the 12 largest environmental pressure groups enjoy combined annual revenues in excess of 1.9 billion dollars — a bankroll which only a small percentage of American companies can boast. hen you also consider that there are over 4,000 environmental groups today, and a hefty percentage of their budgets are aimed squarely at influencing public policy, it seems its high time to reassess our assumptions about the dynamics of today’s environmental debate.