Once home, he has a battery-powered radio and uses a small kerosene lamp to pass time at night reading.

CNN: King: Life is bare bones on the Lakota reservation

Just watch one woman saying how difficult is for her to sustain when she does not have electricity at home and she has go travel long to fetch kerosene oil to light up her lamp at night.

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The developers of a solar lamp that aims to replace kerosene-burning lights in developing countries have won a prestigious environmental award.

BBC: Solar lamp wins award for helping developing countries