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The University of Toronto Edward S Rogers Sr. Department of Electrical & Computer Engineering researchers in Canada have developed and demonstrated a new class of solar-sensitive nanoparticle.

According to C.K. Prahalad, a professor of corporate strategy at the Ross School of Business of the University of Michigan, corporations seeking to create new markets addressing the needs of the billions of poor people living at the bottom of the economic pyramid can - and should - use that effort to drive sustainability and innovation within their own ranks.

Researchers in the US are using pioneering technology to create long-lasting, more efficient nuclear batteries. We talk to Patrick J Pinhero, Alan K Wertsching and Jae Wan Kwon of the University of Missouri about pushing the boundaries of betavoltaic electricity generation. The University of Missouri (MU) is pushing boundaries in betavoltaic electricity generation.

Scientists from Stanford University have developed a microbial battery using 'wired microbes' to create power from sewage and wastewater. The technology, though small in scale, shows early promise as both an electricity source and an exciting new treatment for wastewater.

Last summer saw the official ribbon-cutting ceremony and debut of the Colorado Rocky Mountain School and Aspen Ski Company solar-electric array.

Two Colorado Rocky Mountain School students took part in EcoFlight's Flight Across America last week. The two students bravely flew to Jackson on a small Cessna, piloted by Bruce Gordon. This program (organized by Jane Pargiter and Krysia Carter-Giez) is designed to involve, and inform, high school age students about issues regarding biodiversity and conservation using flight and ground-based education.

Colorado Rocky Mountain School Work Crews provide an avenue for students to take leadership roles and initiate change on campus toward creating a more sustainable life. The Recycling Work Crew maintains recycling stations in all the dorms and major buildings. They collect recycled materials and take them to the local recycling center.

We round up the most innovative oil spill recovery technologies including a chemically modified nanocellulose sponge from Switzerland's Empa, new research into bacteria from the University of East Anglia, and other technological and theoretical breakthroughs. Rod James investigates.

In 2012, a new campaign was formed in the US to spearhead the movement to divest in fossil fuels. Fossil Free, a project of 350.org, has since grown exponentially, claiming last year that organisations - ranging from healthcare, religious groups, universities and local governments

Researchers from a University of California-led study used detailed data sets of existing fossil-fuel burning infrastructures, such as power plants and boilers, to estimate how much carbon dioxide they would emit before they are currently expected to retire.