By Awudu Salami Sulemana Yoda In northern Ghana, communities are facing food insecurity and declining livelihoods due to erratic weather, degraded soils and loss of forests. Among those working on ways to unpick this complicated knot of challenges in the Northern Savannah Zone is an NGO called the Regional Advisory Information and Network Systems, or RAINS. The NSZ stretches 97,000 square kilometers (37,500 square miles) across northern Ghana, where people have long grown maize, millet, yam, groundnuts and soybeans in a landscape dominated by shea nut, baobab and acacia trees. Home to more tha…