绿色长城  

Executive Producer Fernando Meirelles (Academy Award-Nominated Director of "City of God") and Malian musician Inna Modja take us on an epic journey along Africa's Great Green Wall - an ambitious vision to grow an 8,000km wall of trees stretching across the entire continent to fight back against runaway climate change, increasing conflict and mass migration真正的幸福，是内心的平静和满足。