Facebook post by University of Helsinki

Researchers found a groundbreaking new method to facilitate the observation of photosynthetic dynamics in vegetation. This finding brings us one step closer to remote sensing of terrestrial carbon sinks and vegetation health. The new technique differs from these previous efforts by using commercially available LED technology, which literately lights up the forest at night to reveal the full spectrum of emission of whole trees.
A late-night disco in the forest reveals tree performance helsinki.fi

LEDs light up the forest at night to reveal the full spectrum of emission of whole trees.