Experimental attempts to detect QGP

Experiments at the CERN SPS, Brookhaven AGS and Fermilab are in progress to study the reaction mechanism in ultra-relativistic N-N and A-A collisions. Some of the proposed signatures of the Quark-Gluon Plasma, e.g. J/φ suppression, strangeness enhancement etc. have been detected in these experiments but these are not unambiguous. The present results with various experiments are discussed in detail. Current efforts for the next generation of experiment with truly heavy ions at SPS and AGS are highlighted. Plans for experiments with RHIC and LHC colliders are briefly described. (author). 6 refs., 4 figs., 1 tab