Planetary nebulae as probes of galactic evolution and populations

Planetary Nebulae(PNe), the relics of the envelope ejected by low and intermediate-mass stars at the end of their evolution, carry a lot of information of the life of their progenitors and the environment where they originated. The field of PN and its population is more active than even, especially given the new generation of space- and ground-based datasets that have became available in the last few decades. In this paper we review a selection of topics centered in the importance of PNe as probes of galaxy evolution and populations.