The Planck scale – around 10–35 m – is far below scales that can be reached with current accelerators; even the LHC gets down to only about 10–19 m. However, there may yet be hope. Vahagn Gharibyan of DESY, Hamburg, has looked at laser Compton- scattering from leptons at current and future accelerators for effects of a modified dispersion relation that is expected in many quantum-gravity models. Despite the deviations from the usual relation being suppressed by the Planck scale, it turns out that the effective change in refractive index of space could be detectable. For 6 GeV electrons at PETRA-III, a scale of 10–31 m could be reached, while at a future 250 GeV lepton collider, the real Planck scale could come into view.