WHEN he was seven, Stephen Katsaros took apart the box fan in his bedroom and reassembled it using a bigger, stronger motor.
'It sounded like a B-52 but I was cool,' the Denver inventor says. 'I was always breaking stuff open and never really fixing it.'Three decades later, the perpetual tinkerer snaps apart his latest invention: the world's first solar light bulb.
In his spartan Capitol Hill office, Katsaros explains how Nokero, the affordable, durable, sun-fuelled light, can help 1.6 billion people worldwide without electricity and wean them from dangerous kerosene lamps. 'You know how much money we could save on kerosene?' says James Marshall, a Liberian who will soon be distributing Nokero bulbs in his homeland, where there is no network for electrical distribution.
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