Just maybe, a few of the legislators were praying for the next oil boom, the way their fathers and grandfathers did. But this oil bust could be different. A growing body of research says that changes in the international oil market, rapid advances in wind- and solar-powered generation and regulations aimed at curbing climate change may hold down the price of oil and natural gas for years or even a decade. That means the fracking-fueled bonanza that pushed American oil production to levels not seen since the early 1970s may be remembered as more than just another high point for the states that depend on the oil industry. It could be the last oil boom. "We've actually hit a point that this isn't your daddy's kind of boom and bust — it's a new set of factors that are influencing demand," said Shanna Cleveland, a manager of the carbon asset risk program at the nonprofit group Ceres. A lot of people disagree with the idea. And even among those who agree, there are different ideas about how a long-term decline in oil demand could happen and, crucially, when it could happen. But if the predictions are accurate, it could mean that even though oil prices are recovering, they may not hit the $100-a-barrel peaks they reached just two summers ago. And it could extend the economic pain that's already rippling across a half-dozen states dependent on taxes on oil production, from Alaska to the Gulf of Mexico. In North Dakota, a handful of small towns took on hundreds of millions in debt to pay for schools, parks and other projects. A prolonged oil bust could send those communities into a downward spiral in which a dwindling population is forced to pay for boom-time debts with a shrinking tax base.