The Large Hadron Collider is used to study particle physics. But, surprisingly, scientists think it might come in handy for measuring rainfall as well.
The 27 km ring, buried deep under France and Switzerland, expands and contracts by tiny amounts every day. Scientists think that when these amounts are slightly larger it could be because the weight of rain and snow puts pressure on the ring, stretching it. By recording this they could accurately measure rain and snowfall.
I think it's exciting to see the LHC being used in unexpected ways - from secrets of the universe to how our climate is changing.