A raging forest fire sweeping toward Yosemite National Park in California may threaten giant sequoia trees. The massive Rim Fire is an intense "crown" fire, meaning it is burning and leaping in the tops of trees instead of crawling along the ground.
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A raging forest fire sweeping toward Yosemite National Park in California may threaten giant sequoia trees. The massive Rim Fire is an intense "crown" fire, meaning it is burning and leaping in the tops of trees instead of crawling along the ground.