Mark beat me to it, but I would add that this is an absurd thing to say, even for you, ACFH. Even if oil rigs cause global warming, the ONLY reason the rigs are in operation is because of the global demand for petroleum. Petroleum isn't just motor fuel or energy; it's plastics, synthetics and a litany of other things. We can not escape petroleum in our lives, so for you to blame oil producers for causing global warming is hypocritical at best. If you want to know who is causing global warming, look in the mirror...and that applies to everyone.