The research by University of Idaho and Washington State University scientists in cooperation with the Pacific Northwest National Laboratory was published in Environmental Health Perspectives, a journal of the National Institute of Environmental Health Sciences.

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Taking all these things together the burial of the charcoal and the substitution for fossil fuels of the heat, gas and oil produced by its manufacture Johannes Lehmann of Cornell University and Jim Amonette of the Pacific Northwest National Laboratory in Washington state suggest that a reduction of between one and two gigatonnes of carbon-emission a year might be achievable.

ECONOMIST: Biochar could enrich soils and cut greenhouse gases as well

If you rented a car, try to spend an afternoon in hip Boulder, a gorgeous university town in the foothills of the Rockies about 30 miles northwest of downtown.

BBC: Business trip: Denver

Ninety miles northwest of Detroit, Michigan State started as the nation's pioneer land-grant university, charged with using public land to teach practical subjects to augment the liberal arts tradition.

WSJ: A Mini Bilbao Opens in Michigan

New figures on background radiation levels recorded 60km northwest of the Daiichi power plant have also been released this week by Japanese physicist Tsuneo Konayashi from Fukushima Medical University.

BBC: Fukushima fallout fears over Japan farms