2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/11894This review discusses three ways in which radio galaxies and other high-redshift objects can give us information on the nature and statistics of cosmological inhomogeneities, and how they have evolved between high redshift and the present: (1) The present-day spatial distribution and clustering of radio galaxies; (2) The evolution of radio-galaxy clustering and biased clustering at high redshift; (3) Measuring density perturbation spectra from the abundances of high-redshift galaxies.Review at the KNAW colloquium `The most distant radio galaxies', Amsterdam, October 1997. Reidel in pressAstrophysicstext