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New international study finds lab testing of diesel NOx emissions underestimates real-world levels by up to 50%

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in collaboration with scientists at the University of York’s Stockholm Environment Institute (SEI); University of Colorado; and the International Institute for Applied Systems Analysis, assessed 30 studies of vehicle emissions under real-world driving conditions in 11 major vehicle markets representing 80% of new diesel vehicle sales in 2015.

Diesel 230
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GISS study finds applying stricter non-CO2 vehicle emission standards worldwide would yield climate benefits in addition to major health and agricultural benefits

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vehicle emissions under the baseline scenario (a) and the difference between the tight-standard and baseline scenarios (b). However, these standards will not reduce CO 2 emissions, which is required to mitigate long-term climate change, the team notes. million metric tons of avoided ozone-related yield losses of major food crops; $US0.6-2.4

Climate 231
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California ARB greenlights states GHG cap-and-trade program

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The cap-and-trade program also works in concert with other measures, such as standards for cleaner vehicles, low-carbon fuels, renewable electricity and energy efficiency, and complements and supports California’s existing efforts to reduce smog-forming and toxic air pollutants. Click to enlarge.

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SCOPE Biofuels Project Releases Assessment on Environmental Effects of Biofuel Technologies

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The utility of guidelines for sustainable biofuel production and certification programs may be reduced if they are based only on product life-cycle and farming standards, as these cannot address the difficult issue of indirect land use resulting from growing demand. However very few studies include water use impacts. In 2007/08, 0.9%