Contest results: Oh, the places your symmetry went!
In August 2007, we asked readers to send photos of places their copies of symmetry have been. Here are three letters with photographic evidence of the magazine's travels.
In 2023, the ALICE experiment was ready for their best year yet, until a mysterious signal threatened everything. As the LHC wraps up its 2025 lead-ion run, physicists recall how they worked together to solve the puzzle.