The Sky at Night, Tonight: A New View of the Changing Sky ** This lecture has been moved from its previous date...
On the Nature of Time According to Modern Physics What does modern physics have to say about the meaning...
The Shape of Knots: From DNA to Shoestrings and Solar Flares Knots are ubiquitous in the world around us, appearing as...
The Shape of Tiles: Regular and Irregular, Hard and Soft Tiling involves filling a plane or space with repeated elements...
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