Why does time go forwards, not backwards?
The arrow of time began its journey at the Big Bang, and when the universe eventually dies there will be no more future and no past. In the meantime, what is it that drives time ever onward?
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.
