At Yosemite, a Preservation Plan That Calls for Chain Saws

YOSEMITE NATIONAL PARK, Calif. — The towering trees of Yosemite National Park have long held a treasured place in the American psyche, whether the ancient and majestic sequoias, the Ponderosa pines with their snake-patterned bark, or the acorn-laden black oaks, the lifeblood of many Native American cultures. It was with this legacy in mind that…