Here are some of the best things to do this week in San Diego, from Monday, June 23 to Friday, June 27. Check back Wednesday ...

The most famous packing problem concerns spheres. In 1611, the astronomer Johannes Kepler proposed that the densest way to ...

Zachary Davidson, 18, carefully chose several Rubik's Cube variants from his huge collection to include in his senior photo. He's serious about those twisty puzzles.