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Sunny side up for solar heating lens

A prototype device for turning solar energy into electrical power is being tested at the University of Pretoria.

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iol scitehc nov 12 cancer cells
AP

Nosing around cancer cells

Low-cost electronic tester can detect signs of stomach cancer molecules in the breath – and the lesions that precede it.

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AFP

Women scientists get the nod - study

When US college faculty members rated junior scientists, they preferred women over identically qualified men.

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