Final Rulemaking: Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles

US EPA http://www.epa.gov/oms/climate/regulations.htm#1-2 [From Website above]   The complementary EPA and NHTSA standards that make up the Heavy-Duty National Program apply to combination tractors (semi trucks), heavy-duty pickup trucks and vans, and vocational vehicles (including buses and refuse or utility trucks). Together, these standards will cut greenhouse gas emissions and domestic oil use significantly. This program … Continue reading »

Carbon Debt of Conservation Reserve Program (CRP) Grasslands Converted to Bioenergy Production

Proceedings of the National Academy of Sciences (Published online before print August 8, 2011, doi: 10.1073/pnas.1017277108) / by Ilya Gelfanda, Terenzio Zenonea, Poonam Jasrotiaa, Jiquan Chena, Stephen K. Hamiltona, and G. Philip Robertson (open access article) http://www.pnas.org/content/early/2011/08/03/1017277108.abstract [Abstract]   Over 13 million ha of former cropland are enrolled in the US Conservation Reserve Program (CRP), providing … Continue reading »