2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40439As experimental sensitivity increases, one is approaching the range of WIMP-nucleon interaction strengths characteristic of neutralinos. But this continuing progress also unearths new experimental challenges and uncertainties.Invited talk at the 3rd International Conference on Particle Physics and the Early Universe (COSMO-99), Trieste, Italy, 27 September - 3 October, 1999High Energy Physics - PhenomenologyAstrophysicstext