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Environmental protection concerns span a wide variety of issues, including clean air, water quality, chemical security, and environmental aspects of other major issue areas such as transportation and defense. This issue brief provides an overview of key environmental issues that are receiving or may receive attention in the 109th Congress. The sections on specific issues contain references to more detailed and extensive CRS reports on the subjects covered.

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Congressional Research Service (CRS) report entailing information about science technology, engineering, and mathematic (STEM) education issues and legislative options. Topics include, STEM education in the united states, federal programs that promote STEM education, proposals to improve stem education, etc..

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This report provides a brief overview of the alternative minimum tax (AMT) for individuals, discusses the issues associated with the current system, and describes current legislation to amend the AMT. The report will be updated as legislative action warrants.

This report provides a brief overview of the alternative minimum tax (AMT) for individuals, discusses the issues associated with the current system, and describes current legislation to amend the AMT. The report will be updated as legislative action warrants.

The potential for United States hazardous chemical facilities to become the targets of terrorist attacks is a concern which Congress has begun to address in earnest. While the likelihood of such attacks is low at present, Congress enacted legislation that requires the Department of Homeland Security (DHS) to analyze such facilities and suggest enhancements in security and infrastructure. Such legislation--and future like legislation--could include requiring certain environmental and security standards in the future construction of new hazardous chemical facilities. Congress is focusing on educating the public and holding facility owners accountable to increase security, rather than simply restricting terrorists' access to information about the United States' chemical facility infrastructure.

This report provides an overview of the economics of international trade that may be helpful for consideration of many recurring international economic policy issues. It is intended as a general explanation of mainstream economic principles that may be considered in gauging the economic significance of trade issues as well as the trade-offs inherent in many policy choices. This report provides a brief overview of the economic arguments for free trade, common arguments for trade barriers, and the cause and economic significance of persistent large trade deficits.

Correspondence issued by the Government Accountability Office with an abstract that begins "The fiscal year 2005 Department of Homeland Security (DHS) appropriation set aside $25 million, of the $885 million appropriated for the Urban Areas Security Initiative (UASI), for grants to eligible nonprofit organizations that the Secretary of Homeland Security determined to be at high risk of international terrorist attack. This letter responds to the conference report that directed GAO to review the validity of the threat and risk factors used by DHS to allocate discretionary grants to nonprofit organizations in fiscal years 2003, 2004, and 2005. Based on our review of DHS's risk methodology for fiscal year 2006, the criteria in the fiscal year 2005 grant application kit, and conversations with Congressional staff about the conference report, we addressed the following objectives: (1) DHS's methodology for determining risk for urban areas and the nonprofit grant program, and DHS implementation of the program; (2) states' efforts to implement the nonprofit grant program in fiscal year 2005, and (3) whether subgrants were made to nonprofits in fiscal years 2003 and 2004, when funds were not specifically set aside for nonprofits."

Correspondence issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) expects to purchase about 2,400 Joint Strike Fighter (JSF) aircraft, with potential international sales of 2,000 to 3,500 aircraft. When the number of aircraft engines and spare parts expected to be purchased is considered--along with the lifetime support needed to sustain the engines--the future financial investment will be significant. DOD implemented the JSF alternate engine development program in 1996 to provide competition between two engine manufacturers in an effort to achieve cost savings, improve performance, and gain other benefits. Since then, DOD has invested $1.2 billion in the alternate engine program, and, in August 2005, it awarded a $2.4 billion contract for system development and demonstration of an alternate engine. However, in its fiscal year 2007 budget submission, DOD proposed canceling the alternate engine program. Concerned whether this decision was based on sound analysis, Congress asked us to review DOD's rationale for canceling the program and the analysis supporting it, including the life cycle savings, benefits, and risks assessed."

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This report summarizes the subsidies that are available for about 25 agricultural commodities representing about one-third of gross farm sales.

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This report provides a brief overview of illicit methamphetamine (MA) abuse, production, trafficking, the federal methamphetamine-specific programs, and anti-MA legislation introduced in the 109th Congress. MA abuse has implications for public health, child welfare, crime and public safety, border security, and international relations.

Single crystalline copper was subjected to quasi-isentropic compression via gas-gun and laser loading at pressures between 18 GPa and 59 GPa. The deformation substructure was analyzed via transmission electron microscopy (TEM). Twins and laths were evident at the highest pressures, and stacking faults and dislocation cells in the intermediate and lowest pressures, respectively. The Preston-Tonks-Wallace (PTW) constitutive description was used to model the slip-twinning process in both cases.

The program explored a completely new, economical method of manufacturing nanocrystalline ceramics, Hot Superplastic Powder Forging (HSPF). The goal of the work was the development of nanocrystalline/low porosity optically transparent zirconia/alumina. The high optical transparency should result from lack of grain boundary scattering since grains will be smaller than one tenth the wavelength of light and from elimination of porosity. An important technological potential for this process is manufacturing of envelopes for high-pressure sodium vapor lamps. The technique for fabricating monolithic nanocrystalline material does not begin with powder whose particle diameter is <100 nm as is commonly done. Instead it begins with powder whose particle diameter is on the order of 10-100 microns but contains nanocrystalline crystallites <<100 nm. Spherical particles are quenched from a melt and heat treated to achieve the desired microstructure. Under a moderate pressure within a die or a mold at temperatures of 1100C to 1300C densification is by plastic flow of superplastic particles. A nanocrystalline microstructure results, though some features are greater than 100nm. It was found, for instance, that in the fully dense Al2O3-ZrO2 eutectic specimens that a bicontinuous microstructure exists containing <100 nm ZrO2 particles in a matrix of Al2O3 grains extending over …

This project involved the development of a method for in vivo prompt gamma neutron activation analysis for the investigation of Boron-10 distribution in a rabbit knee. The overall objective of this work was a robust approach for rapid screening of new {sup 10}B-labelled compounds to determine their suitability for use in the treatment of rheumatoid arthritis via Boron Neutron Capture Synovectomy (BNCS). For BNCS it is essential to obtain a compound showing high uptake levels in the synovium and long residence time in the joints. Previously the in vivo uptake behavior of potential compounds was evaluated in the arthritic knee joints of rabbits via extensive dissection studies. These studies are very labor-intensive and involve sacrificing large numbers of animals. An in vivo {sup 10}B screening approach was developed to provide initial evaluation of potential compounds. Only those compounds showing positive uptake and retention characteristics will be evaluated further via dissection studies. No further studies will be performed with compounds showing rapid clearance and/or low synovial uptake. Two approaches to in vivo screening were investigated using both simulation methods and experimentation. Both make use of neutron beams generated at the MIT Research Reactor. The first, Transmission Computed Tomography (TCT) was developed …

Southwest Research Institute (SwRI) conducted a burn test of the Caustic-Side Solvent Extraction (CSSX) solvent to determine the combustion products. The testing showed hydrogen fluoride gas is not a combustion product from a solvent fire when up to 70% of the solvent is consumed. The absence of HF in the combustion gases may reflect concentration of the modifier containing the fluoride groups in the unburned portion. SwRI reported results for other gases (CO, HCN, NOx, formaldehyde, and hydrocarbons). The results, with other supporting information, can be used for evaluating the consequences of a facility fire involving the CSSX solvent inventory.