Florida: shocking video of a man trying to steal a child in a supermarket
A man tried to kidnap a four-year-old boy while his family was shopping at the Lehigh Acres Walmart., in Lee ...
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What can you do with an Einstein? The history of an 'aperiodic tile'
It has been a year of endless Einsteins. In March, a group of mathematical mosaicists announced that they had discovered ...
