61.   Rust, it is estimated, costs Americans billions of dollars a year.

62.   Reformulating the inhalers is expected to cost billions of dollars.

63.   Seen by some as a badly flawed law, Superfund has cost billions of dollars and cleaned up few hazardous waste sites.

64.   Since its passage, the high-technology bubble has burst and a record number of corporations have restated their earnings, costing investors billions.

65.   Some scientists and engineers have argued that fusion energy is inherently impractical because a fusion reactor costing billions of dollars would quickly wear out.

66.   That expansion of rapid transit would cost billions of dollars.

67.   That proposal called for the replacement of insulation in nearly every U.S. commercial airplane, and would have cost airlines billions of dollars.

68.   Telecom companies are more or less going along, Wilson said, because merger delays can cost billions.

69.   That rescue will cost taxpayers billions.

70.   The bailout cost billions.