Xinhua Headlines: NASA satellite data verify China's contribution to global greening efforts

People plant trees at the Saihanba forest in Weichang Man and Mongolian Autonomous County of Chengde City, north China's Hebei Province, May 13, 2014. Saihanba is a vast forest covering nearly 75,000 hectares. It was a piece of barren land 55 years ago, but decades of hard afforestation efforts turned it into an important ecological shield for Beijing and Tianjin. (Xinhua/Wang Xiao)