The greatest challenge of the Great Green Wall is not planting trees but ensuring their survival. According to international environmental agencies, if all the trees that had been planted in the Sahara since the early 1980 had survived, it would now look like Amazonia.  NIA Centers are modular Nurseries Into Action that can be easily built with locally sourced materials across remote areas of the Sahel to provide a base, shelter, and facilities that support proper care and follow up of the planted trees across the Sahel region.  This detached building prototype is designed by UNOA -Universidad Nacional Open Architecture-, a team of architects and engineers that designed and built the PV4 home, a self-sufficient building recently awarded in the Solar Decathlon Competition Latin America and the Caribbean.  Nia Centers harvest solar energy via PV systems, provide proper hydrothermal conditions for seed keeping and germination process under desert conditions; and function as training schools to educate new generations in forestry and climate change across Africa.  These buildings also provide humanitarian assistance to communities and give kids and teenagers in remote areas an alternative return to civilian life after being involved in armed conflicts.   NIA is also the African word for making community and restoring people to their traditional greatness.