Grist: If you read the financial papers, you may be aware that the Gulf of Mexico is looking like a giant, underwater piggybank. New advances in seismic technology, and more powerful equipment developed for fracking operations, have turned oil fields that were thought to be extinct into gold rush territory again. The same dynamic that has led to oil booms in previously quiet regions of the Great Plains and Appalachia is now moving to the less-populated - but at least equally ecologically fragile - offshore...