Pine trees have an ecological memory

Climate change is leading to drier conditions in Valais. For around two decades now, many Scots pines in the canton have been dying, in some cases over large areas. The Swiss Federal Institute for Forest, Snow and Landscape ...

Forest fertilization with paper mill residues

Research at Karlstad University shows that sludge and ashes as paper mill residues can be used as effective fertilizer. This involves biochar, that is, carbon from organic material returned to the forest and thus closing ...

A Mexican indigenous town's environmental revolt

When illegal logging turned their green, pine-covered hills into an ecological wasteland, the people of the Mexican indigenous town of Cheran decided to arm themselves with rifles and reclaim their land.

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