  Understanding how galaxies form in the early universe and their subsequent
evolution through cosmic time is a major goal of modern astrophysics.
Panchromatic look-back sky surveys significantly advanced the field in the past
decades, and we are now entering an even more fruitful period - a 'golden age'
of radio astronomy - with upgraded, and new facilities delivering an order of
magnitude increase in sensitivity. An overview of recent developments in radio
continuum sky surveys, focusing on the physical properties and cosmic evolution
of radio AGN since z~5 is presented here.
