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Government investment worth £50bn would convince private companies that power from the Sahara solar scheme is feasible and attractive option, expert says

She does not know her age because, like most women in the hills of the state of Orissa, she cannot read or write. But she can wire up and run a solar-powered 12-volt electricity system. Which - as we tell her - is more than we know how to do.

Video from NASA

Resource Consumption: EU biofuels targets are unethical, according to a report by the Nuffield Council on Bioethics.