Mirror, mirror, on the... ground?

By , Suman Bandrapalli, and Elisabetta Coletti

Ma Deming (left) and his daughter Sofia watch a solar heating device made of concrete and mirrors heat a kettle of water in their village in southwestern China. Deming paid 70 yuan (US$ 8.40) for the solar panel, which boils water in a half-hour.

(c) Copyright 1999. The Christian Science Publishing Society

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