Ar 
En New research on garbage dumps in 44 sub-Saharan African countries shows that 95% are unregulated. The landfill sites still take in new garbage even when they are filled to capacity. As the waste decomposes, these sites release harmful greenhouse gases. However, using the methane gas to generate energy instead could save the continent billions of dollars. We talk to sustainability scientist and author of the research, Nkweauseh Reginald Longfor.
