11.   Experts say the mushroom boom was fueled by recent warm rain that let the fungi grow abundantly.

12.   Fueling the boom of private prisons is the public demand for more prison beds, which has placed growing demands on state budgets.

13.   Fueling that boom is the rising number of people in Asia going online, projected to more than triple over the next four years.

14.   Fueling the boom in blood glucose meters is hefty growth in new diabetes cases.

15.   Fueling the boom is the strengthening economy.

16.   In insurance, the consolidation of the overcrowded life-insurance business is fueling the boom.

17.   Increased oil investments are fueling a boom in certain parts of the economy.

18.   Like the previous one, the current building boom is fueled by the surging economy in Manhattan.

19.   Now, residents who fueled the boom want more in return from their cities.

20.   Renny Pritikin, artistic director at the new Center for the Arts in San Francisco, believes the sci-fi boom is fueled by the approach of the millennium.