51.   When temperatures start rising, air conditioners will begin working around the clock, meaning power plants will burn more fuel.

52.   Yet so far as is known, he has not asked anyone to figure out how the country should deal with the consequences of burning those fuels.

53.   Blazic warned that the enormous quantity of carbon dioxide produced by burning jet fuel could also have severe repercussions on the environment.

54.   How does one burn the fuel efficiently?

55.   Hot gas from burning rocket fuel singed primary O-rings in the booster nozzles of Atlantis and Discovery in late June and July.

56.   It was built to burn used fuel, transform it to new plutonium fuel and produce electricity.

57.   Much of this increase, it is believed, is the result of burning fuels and cutting down and burning forests.

58.   Pearce said the new standards could do more environmental harm than good if they kept cars that burned less fuel off the road.

59.   Richardson said the price differential between conventional gasoline and the cleaner burning fuel -- about a third of the gasoline sold -- has no justification.

60.   Shaposhnikov said the Russian planes are more expensive to operate because their engines burn more fuel and they demand frequent repairs.