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Facing climate change, Swiss trees get mist before they're missed

Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) and Swiss Federal Institute of Technology in Lausanne university (EPFL) researcher Giovanni Bortolami touches a pine branch from a scaffolding towers at Pfynwald forest near Leuk, Switzerland's southern Wallis region. AFPCaption

In a Swiss pine forest, the treetops are being sprayed with mist in a bid to discover the effect that drier or wetter air has on their ability to survive.

Eighteen scaffolding towers have been erected between the trees in the Pfynwald in Switzerland's southern Walli’s region. High-pressure nozzles mounted on the towers spray vapour over the canopy of some 60 Scots pines, standing 15 metres (49 feet) tall.

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