All plants emit a red light that can still be measured in space – particularly strong under stress. These light signals can therefore reveal how fields and forests are doing.
A click of the mouse and a picture worthy of a postcard appears on Georg Wohlfahrt’s computer screen: bright blue skies and snow-capped Alpine peaks towering above lush pine forests, taken about 80 kilometers from Innsbruck. There, the scientist and his team from the University of Innsbruck are researching the condition of the trees and how this interacts with climate change. The phenomenon designed to help them is in the picture…
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