Climbers Are Scaling The World’s Tallest Trees In An Effort To Save Them Arborists from the nonprofit Archangel Ancient Tree Archive climb trees to collect genetic material from their branches as part of a major conservation project. Archangel arborist Jim Clark climbs a giant equoia in the southern Sierra Nevada near Camp Nelson, Calif., on May 23, 2016. The family run Archangel Ancient Tree Archive is trying to preserve some of world’s oldest and largest living plants. 09/07/2016 http://www.huffingtonpost.com/entry/giant-trees-cloning-climate-change_us_57c9362ee4b0a22de095860b [with embedded video, and comment]