Last week, fires began burning out of control in steep canyons near California's Sequoia National Park, which contains some of the world's largest trees as measured by volume. As the flames approached, park officials wrapped the bases of some trees in fireproof aluminum blankets to protect the giants. By Monday, the flames had mostly passed by the biggest trees, although the blankets were probably less important to their salvation than the controlled burns the park has done in recent years, a park official told SFGate.
Here's a look back at the fight to protect the trees in Sequoia: