If the dark matter were warm, it might require different search methods than those currently being applied in
underground lab experiments and at the
Large Hadron Collider in Geneva, Switzerland, Kaplinghat says.
Keen to avoid a similar debacle, CERN, the European particle physics
lab near Geneva, Switzerland, took the momentous decision to cram the LHC into an existing circular tunnel 100 metres
underground, which had been built in the 1980s for the
Large Electron Positron (LEP) collider.