Pecologix Political Ecology Blotter

Peters et al.1 show that global carbon dioxide emissions from fossil-fuel combustion, cement production and gas flaring grew faster than the historical average annual rate during 2010, negating the decrease in 2009 associated with the global financial crisis. We extend the work of Peters et al. by using decomposition analysis to show that the rising [...]

Approaches to reduce N2O emission from crop ecosystems deserves urgent need for climate change mitigation in world agriculture. Yet, unique ecological measures to depress N emission while conserving crop productivity have not yet been well developed for wide ranges of crop ecosystems. In order to establish an ecological engineering option to mitigate N2O emission in [...]

Although laboratory experiments have shown that organic compounds in both gasoline fuel and diesel engine exhaust can form secondary organic aerosol (SOA), the fractional contribution from gasoline and diesel exhaust emissions to ambient SOA in urban environments is poorly known. Here we use airborne and ground-based measurements of organic aerosol (OA) in the Los Angeles [...]

The potential role of molecular hydrogen (H2) as a future alternative energy carrier has generated widespread interest. The possible amount of additional hydrogen emission into the atmosphere in a hydrogen-based economy depends on future hydrogen production and leakage rates throughout the complete process chain. However, the expected emissions are highly uncertain. Based on the current [...]

Following a 2007 Supreme Court ruling, the U.S. Environmental Protection Agency (EPA) today proposed the first Clean Air Act standard for carbon pollution from new power plants. EPA’s proposed standard reflects the ongoing trend in the power sector to build cleaner plants that take advantage of American-made technologies, including new, clean-burning, efficient natural gas generation, [...]

CO2 reduction targets tend to be set in terms of the amount of pollution emitted within a given region. However, there is increasing public and policy interest in the notion of a carbon footprint, or CO2 generated globally to serve final consumption demand within a region. This raises an issue in that, despite the local [...]

In the past two decades, rapid population and economic growth on the U.S.–Mexico border has spurred a dramatic increase in electricity demand. In response, American energy multinationals have built power plants just south of the border that export most of their electricity to the U.S. This development has stirred considerable controversy because these plants effectively [...]