Abstract
Liquid argon detectors make ideal tracking calorimeters giving a
spatial event reconstruction comparable to bubble chambers. This technology is
currently being developed for a future large-scale (>100 kt) detector with a
physics programme that spans neutrino oscillations, particle astrophysics and
proton decay. This talk will cover liquid argon technology and the physics
case and will review the current state-of-the-art both in the UK and world-
wide.