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"Slightly Changing Physical Law is what a group of astronomers led by John Webb, of the University of New South

Wales, in Australia, think they may have found. Writing in a recent issue of the technical journal Physical Review Letters, Webb described his team's search for evidence of 'alpha' in the early universe. Alpha is, like pi, a 'transcendental number'—a natural constant that holds under all circumstances. Pi ... represents the ratio of the circumference of a circle to its diameter, and is always and everywhere 3.14159.

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Looking back, looking ahead
December 31, 2001
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