The state of California is expected to have significant population growth in the next half-century resulting in additional passenger transportation demand. Planning for a high-speed rail system connecting San Diego, Los Angeles, San Francisco, and Sacramento as well as many population centers between is now underway. The considerable investment in California high-speed rail has been debated for...

The challenges associated with environmental sustainability and greenhouse gas emissions are increasingly affecting policy making and global economic activity. Since energy use accounts for eighty percent of all greenhouse gas emissions in Europe, the European Union is determined to fight against climate change and reduce emissions by at least twenty percent in 2020. Although information and co...

Complex sociopolitical, economic, and geographical realities cause the 20 million residents of Mexico City to suffer from some of the worst air pollution conditions in the world. Greenhouse gas emissions from the city are also substantial, and opportunities for joint local-global air pollution control are being sought. Although a plethora of measures to improve local air quality and reduce gree...

Executive Summary Biochar is an increasingly popular topic in environmental management due to its potential effects on several ecosystem functions. Specifically, biochar has been linked to significant reductions in greenhouse gas emissions, including nitrous oxide, carbon dioxide and methane when used as a soil amendment. It has also been suggested as a long term mechanism to sequester carbon i...

Concerns about atmospheric emissions of greenhouse gases and operation costs are converging to increase incentives for both the electric utility and magnesium industries to rapidly locate and repair equipment leaks (Irwin, 1997). The primary culprit is sulfur hexafluoride (SF6), an invisible, non-hazardous, inert gas with near-perfect dielectric properties that is used as an insulating gas in h...

Foreword The Australian Greenhouse Office commissioned The Allen Consulting Group to consult with industry and other stakeholders and provide independent advice on permit allocation options under a possible national emissions trading system. This report represents The Allen Consulting Group's findings. The Australian Greenhouse Office is releasing this report in the interest of informing and pr...

During the last decade, Norway has carried out an ambitious climate policy by implementing a relatively high carbon tax already in 1991. The Norwegian carbon taxes are among the highest in the world. Data for the development in CO2 emissions provide a unique opportunity to evaluate carbon taxes as a policy tool for CO2 abatement. We combine a divisia index decomposition method and applied gener...

doi:10.1289/ehp.11562 Cohn et al. (2008) suggested that birth cohort trends in breast cancer rates for women under 50 years of age are consistent with declining use of DDT (dichlorodiphenyltrichloroethane) after 1959. They cited Weiss (2007) in claiming that increased detection and treatment of in situ breast cancer must be considered when interpreting recent trends in breast cancer mortality r...

A compact commercial Doppler lidar has been deployed in Indianapolis for two years to measure wind profiles and mixing layer properties as part of project to improve greenhouse measurements from large area sources. The lidar uses vertical velocity variance and aerosol structure to measure mixing layer depth. Comparisons with aircraft and the NOAA HRDL lidar generally indicate good performance, ...