(snip) And California is about to get a lot tougher. Later this month, the Legislature will vote on two ground-breaking bills. One would set binding limits on greenhouse gas emissions with a goal of reducing them to 1990 levels by 2020 — an ambitious undertaking by any measure. The other is a strikingly original bill that would bar long-term contracts with any out-of-state utility that failed to meet strict standards for pollution. A coal-fired plant in Wyoming, for instance, could sell power into California only if it found ways to dispose of most of its carbon dioxide, instead of merely...