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Emissions of potent GHG HFC-23 have grown, contradicting reports of huge reductions

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Despite reports that global emissions of the potent greenhouse gas, HFC-23, were almost eliminated in 2017, an international team of scientists, led by the University of Bristol, has found atmospheric levels growing at record values. As a result, they reported that they had almost completely eliminated HFC-23 emissions by 2017. Resources.

Emissions 199
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Life cycle analysis of three battery chemistries for PHEVs and BEVs; environmental impacts higher than expected

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Researchers from the Norwegian University of Science and Technology (NTNU) have performed life cycle assessments (LCA) of three batteries for plug-in hybrid (PHEV) and full performance battery electric (BEV) vehicles. Flow diagram of the battery system, defined by the functional unit of 50 MJ stored and delivered to the powertrain.

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UC Davis Begins $2.8M Studies on Impacts of Escaped Nitrogen

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University of California, Davis researchers will receive $2.8 Wastes from cattle, chickens and other livestock include nitrogen. With this new funding, we can start to fill in those blanks, and improve management of nitrogen, carbon and water to help move agriculture toward sustainability in significant ways. Tom Tomich.

Davis 240
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The importance of considering non-exhaust traffic emissions; the role of EVs

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As reported earlier here ( earlier post ) a recent literature review by a team from the University of Edinburgh (Timmers et al. Air Waste Manag. The traffic/exhaust component consisted predominantly of externally mixed soot particles and soot internally mixed with secondary particles. The role of EVs. Denier van der Gon, H.A.C.,

Exhaust 150
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New Comprehensive Lifecycle Energy and Emissions Inventory Includes Non-Operational Components; Large Aircraft Can Perform Better than Light Rail

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Mikhail Chester and Arpad Horvath inventoried on-road, rail, and air travel to determine energy consumption, greenhouse gas (GHG) emissions, and criteria air pollutant (CAP) emissions (excluding PM, lead, and ozone due to lack of data). Chester and Horvath (2009). Click to enlarge.

Light 150
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Lifecycle study finds that environmental impacts of silicon-anode Li-ion battery could be roughly comparable with conventional Li-ion battery

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For example, the life cycle impacts of the conventional battery pack using carbon graphite are dominated by the battery use phase which contributes to 78% of ADP, 78% of GWP, 64% of AP, 75% of EP, 80% of POP, and 83% of HTP. Units of the X-axis values are different and shown under each impact category name on Y-axis. Credit: ACS, Li et al.

Li-ion 265
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SCOPE Biofuels Project Releases Assessment on Environmental Effects of Biofuel Technologies

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In general, biofuels made from organic waste are environmentally more benign than those from energy crops. A few studies also include other relevant impact indicators as acidification potential, eutrophication potential, ozone depletion potential and various toxicity potentials. However very few studies include water use impacts.