GAO’s reports and testimonies give Congress, federal agencies, and the public timely, fact-based, non-partisan information that can improve government operations and save taxpayers billions of dollars.
Primarily because of concerns that noise from air tours over national parks could impair visitors' experiences and park resources, Congress passed the National Parks Air Tour Management Act of 2000 to regulate air tours.
A dramatic increase in freight moving on the nation's highways and rail lines, coupled with growing congestion and infrastructure limitations, has prompted DOT to explore new mobility-enhancing options like short sea shipping (SSS)--transporting freight by water between domestic ports, either along the...
Our July 2003 report on the status of the Environmental Protection Agency's (EPA) Superfund program included, among other things, data on the program's appropriations and expenditures for fiscal years 1993 to 2002.
Diesel engine emissions pose health risks, but one major source--heavy-duty diesel vehicles--is critical for our economy. To reduce risks, the Environmental Protection Agency (EPA) has set stringent emissions standards for diesel engines.
Over the years, the traveling public, flight attendants, and the medical community have raised questions about how airliner cabin air quality contributes to health effects, such as upper respiratory infections.