The largest grove of giant sequoias in Yosemite National Park was closed Friday and hundreds of people ordered evacuated nearby as a wildfire burning through dense forest became the latest in recent years to threaten the world’s largest trees. A team was being sent to the Mariposa Grove to wrap some of the massive trunks in fire-resistant foil to protect them as the blaze burned out of control, said Nancy Phillipe, a Yosemite fire information spokesperson. More than 500 mature sequoias were threatened but there were no reports of severe damage to any named trees, such as the 3,000-year-old Grizzly Giant.