We recently declared that the fracking debate was over. Despite clear evidence of the shale boom's local environmental effects, it's probably added about 50 basis points to GDP, shrunk the trade deficit, and created tens of thousands of jobs. Despite all that, Goldman Sachs believes America has left tons of figurative barrels and cubic feet on the table by not more aggressively investing in spurring demand. While the U.S. share of global upstream (that is, production) investment outpaced funds into Saudi Arabia and Russia by 10:1, the rest of the world outspent the U.S. on demand-side investment — places to put all...