Off topic: Prime number, polite trees, action-figure fun, icy Rubik’s Cube

The Tennessee man who recently found the largest known prime number yet spent 14 years on the search. Why do trees seem to shy away from touching one another? Toy Stories, or fun with action figures. And better solve it fast: a Rubik’s Cube made out of ice.

Photo: A not-so-icy Rubik’s Cube. (Bay Area News Group archives)


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