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Soil is a major carbon pool, whose impact on climate change is still not fully understood. According to a recent study, however, soil carbon stocks and could be modelled more accurately by factoring in the impacts of both soil nutrient status and soil composition. Determining the volume of carbon dioxide efflux from soil is important to enabling better choices in forest management with respect to curbing climate change. Knowledge of the extent and regional variation of soil carbon stocks is vital. Current soil carbon stock predictions are unreliable and it is difficult to estimate the volume of carbon dioxide efflux that is emitted from soil as a result of climate change.
New research shows that human pollution of the atmosphere with acid is now almost back to the level that it was before the pollution started with industrialization in the 1930s. The results come from studies of the Greenland ice sheet and are published in the scientific journal, Environmental Science and Technology.The Greenland ice sheet is a unique archive of the climate and atmospheric composition far back in time. The ice sheet is made up of snow that falls and never melts, but rather remains year after year and is gradually compressed into ice. By drilling ice cores down through the kilometre-thick ice sheet, the researchers can analyse every single annual layer, which can tell us about past climate change and concentration of greenhouse gases and pollutants in the atmosphere.
Throughout the U.S., trees are dying at an astonishing rate. The reasons for the die-off vary from location to location — drought, disease, insects and wildfires – but the root cause in many of these cases is the same: climate change.The epidemic is even threatening the oldest white oak tree in America, a 600-year-old giant in New Jersey that predates Columbus’ visit to the Americas.
Researchers at Kyoto University have found that molybdenum silicides can improve the efficiency of turbine blades in ultrahigh-temperature combustion systems.Gas turbines are the engines that generate electricity in power plants. The operating temperatures of their combustion systems can exceed 1600 °C. The nickel-based turbine blades used in these systems melt at temperatures 200 °C lower and thus require air-cooling to function. Turbine blades made out of materials with higher melting temperatures would require less fuel consumption and lead to lower CO2 emissions.