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Virgin Atlantic: Emissions from Steel Mills Could Fuel Airplanes

Fri, 16 Sep 2016 13:32:00 EST

After five years of research and development, Virgin Atlantic and one of its clean-technology partners, Illinois-based LanzaTech, developed a source of jet fuel made of waste gases from steel mills. According to the companies, this new source of jet fuel passed extensive tests that both delivered on performance and promise to result in carbon emissions savings of 65 percent compared to conventional jet fuel.This discovery comes at a time when airlines, seeking to mitigate what is a carbon-intensive business, have long dabbled with jet fuel blended with algae and other biofuels. The Dutch carrier KLM experimented with algae fuel blends, has flown transatlantic flights using blends of kerosene and cooking oil, and is still apparently committed to sourcing these fuels when available. Alaska Airlines also considered using recycled cooking oil to reduce its carbon emissions. Earlier this year, United kicked off flights between San Francisco and Los Angeles using a biofuel-conventional blend. Aviation fuel using feedstock from Brazilian sugarcane is also touted as an option.(image)



Renewables have the economic advantage over fossil fuels

Fri, 16 Sep 2016 11:00:00 EST

A new energy market analysis shows the average cost of electricity from renewables is already lower than from fossil fuels, writes Alex Kirby. And as renewables eat deeper into the 'market share' of coal and gas power plants, so the entire economics of fossil fuel power generation will unravel.The cheapest way of generating energy today is to use renewable fuels - and the authors of a new analysis predict that renewables are set to enjoy even more of an advantage within a few years.The study by the Carbon Tracker Initiative says renewable power generation costs are already lower on average worldwide than those of fossil fuels.(image)



Green city in UAE desert has much to teach the world

Wed, 14 Sep 2016 14:19:00 EST

A new desert city in the United Arab Emirates without light switches or water taps has much to teach people around the world about saving energy and precious resources.With its low-rise and energy efficient buildings, smart metering, excellent public transport - a personal transportation pod is pictured below - and extensive use of renewable energy, the 2,000 citizens of Masdar City, in Abu Dhabi, are living in a place which is a ‘green’ example to city planners around the globe.(image)



New tools assess the future of wind power

Wed, 14 Sep 2016 11:29:00 EST

Using software tools developed by Near Zero, a research group hosted by the Carnegie Institution for Science's Department of Global Ecology, a team of researchers has completed the largest expert survey yet on any energy technology, in this case wind energy.Near Zero conducts research and assessment of energy and climate issues, focusing on integrating quantitative analysis with expert judgment. In this way, they inform decision-making to accelerate the global transition to a near-zero emission energy system. To support this work, Near Zero has developed open-source software tools to examine where experts agree and disagree and why.(image)



Experts anticipate significant continued reductions in wind energy costs

Tue, 13 Sep 2016 13:37:00 EST

Technology advancements are expected to continue to drive down the cost of wind energy, according to a survey of the world's foremost wind power experts led by Lawrence Berkeley National Laboratory (Berkeley Lab). Experts anticipate cost reductions of 24%-30% by 2030 and 35%-41% by 2050, under a median or 'best guess' scenario, driven by bigger and more efficient turbines, lower capital and operating costs, and other advancements.(image)



Carbon-coated iron catalyst structure could lead to more-active fuel cells

Mon, 12 Sep 2016 16:46:00 EST

Fuel cells have long held promise as power sources, but low efficiency has created obstacles to realizing that promise. Researchers at the University of Illinois and collaborators have identified the active form of an iron-containing catalyst for the trickiest part of the process: reducing oxygen gas, which has two oxygen atoms, so that it can break apart and combine with ionized hydrogen to make water. The finding could help researchers refine better catalysts, making fuel cells a more energy- and cost-efficient option for powering vehicles and other applications.Led by U. of I. chemistry professor Andrew Gewirth, the researchers published their work in the journal Nature Communications.(image)



Scientists expect to calculate amount of fuel inside Earth by 2025

Fri, 09 Sep 2016 14:48:00 EST

Earth requires fuel to drive plate tectonics, volcanoes and its magnetic field. Like a hybrid car, Earth taps two sources of energy to run its engine: primordial energy from assembling the planet and nuclear energy from the heat produced during natural radioactive decay. Scientists have developed numerous models to predict how much fuel remains inside Earth to drive its engines -- and estimates vary widely -- but the true amount remains unknown.(image)