Demand for Cleaner Gas
386462 13: Workers position a six-ton section of pipe to be laid October 3, 2000 in Howell, Michigan, 60 miles north of Detroit. The coordinates will be mapped in order to pinpoint sections of the pipeline needing later repairs. The pipeline will carry natural gas from Canada to the northeastern US. The demand for cleaner natural gas, estimated to be growing at 1.8% a year, is requiring more energy infrastructure to be built. At present, the US has 270,000 miles of interstate gas pipelines in place. (Photo by Robert Nickelsberg/Liaison)