— A. Whitney Griswold
— A. Whitney Griswold
In 2016 researchers from the Centre for Ecological Research in Hungary pointed laser scanners at two birch trees, one in Austria & one in Finland. Between two hours after sunset and just before sunrise, the trees branches drooped by as much as 10cm🌳
In 2016 researchers from the Centre for Ecological Research in Hungary pointed laser scanners at two birch trees, one in Austria & one in Finland. Between two hours after sunset and just before sunrise, the trees branches drooped by as much as 10cm🌳