The European Space Agency (ESA) has launched a new initiative called the Changing Earth Science Network, to support young scientists under taking leading-edge research activities aimed at advancing the understanding of the Earth system. The initiative will enable up to 10 young postdoctoral researchers from the agency's member states to address major scientifi c challenges by using Earth observation (EO) satellite data from ESA and its third-party missions. The initiative aims to foster the development of a network of young scientists in Europe with a good knowledge of the agency and its EO programs. Selected candidates will have the option to carry out part of their research in an ESA center as a visiting scientist.