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The Big Flip

发布时间:2019-03-07 06:05:02来源:未知点击:

By Joanna Marchant THE devastating weather system El Niño may have a benevolent side. Researchers in Holland say it could be harnessed to recover land that has been degraded by overgrazing and desertification. Ecologists Marten Scheffer and Milena Holmgren of Wageningen University in the Netherlands say some arid areas are so badly degraded that they cannot recover by themselves,