Comment by sandworm101

Decades ago i was a big wall rock climber. We would often see old photos of mountains and cliffs and remark "where are the trees?" Areas we knew to be covered in forrest were bare only a century ago. This wasnt logging (climbing areas are too rugged to be logged bare.) There were just fewer trees. The general assumption was CO2. The combination of longer growing seasons and more plant food (co2) may mean there are simply more trees.