Natural reforestation in southern Pyrenees favors orchid

A 13-year study has been key to understanding how and why an orchid species (Cypripedium calceolus), which is endangered in some countries in Europe, is surviving and recovering in the Pyrenees. The results suggest that the ...

Eastern US forests resume decline

After increasing during much of the 20th century, forest cover in the eastern United States in recent decades has resumed its previous decline, according to an exhaustive new analysis published in the April 2010 issue of ...

Stanford land-use expert brings satellite data down to Earth

By integrating remote satellite imagery with revelations from door-to-door interviews, Stanford University geographer Eric Lambin and his colleagues are exploring the complex conditions that give rise to a broad range of ...

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