The U.S. Army Corps of Engineers attracts congressional attention because its projects can have significant local and regional economic benefits and environmental effects, in addition to their water resource development purposes. This report provides an overview of the Corps civil works program. It covers the congressional authorization and appropriation process, the standard project development process, and other Corps activities and authorities. It also includes an Appendix on the evolution of Corps civil works missions and authorities and a description of the limits on the Corps' role in levee accreditation and improvements for the National Flood Insurance Program (NFIP).

This report provides an overview of current issues surrounding alternative fuels and advanced technology vehicles - issues discussed in further detail in other CRS reports referred to in each section.

Climate change and greenhouse gas (GHG) emissions are a continuing issue in the 109th Congress. Bills directly addressing climate change issues range from those focused primarily on climate change research to comprehensive emissions cap-and-trade programs. Additional bills focus on GHG reporting and registries, or on power plant emissions of carbon dioxide, as part of wider controls on pollutant emissions. The bills vary in their approaches to climate change issues. This report briefly discusses the basic concepts on which these bills are based and compares major provisions of the bills in each of the following categories: climate change research, technology deployment, GHG reporting and registries, and emissions reduction programs.

This report discusses different perspectives used to consider issues related to the global climate change and issues related to the 1992 U.N. Framework Convention on Climate Change and the 1997 Kyoto Agreement.