2NLC academia ancestral land archive Asia biodiversity Cambodia campus cities civil society climate change communal land constitution cooperation customary ecosystems education EFN GIZ green spaces housing human rights inclusive indigenous rights informal settlements informal settlement upgrading journalism land land delivery land reform Laos liberation livelihoods murd namibia national land conference natural ecosystems nhag NMT open source opportunities partnership policy reform research restorative justice rural sdfn sdi South Africa Southern Africa teachers tenure transformation UN Habitat urban urban development urbanisation urban land Windhoek