BBC: The huge ancient trees in the United States were died by insects and humans could not do climate change.

China Well -off. On July 18th, in 2005, in 2005, in the 15 -acre (0.06 square kilometer) forest in the north of the Rocky Mountains in Montana, there were several yellow pine died of a century -old Huang Song.I soon discovered that they were brought down by the mountain beetle. The pine beetle was a harmful killer on the size of the rubber size on a pencil, and they drilled into the tree for food.

Sequoia is one of the most iconic trees in North America

The BBC BBC reported that the second year, the number of dying trees increased in index.When I saw these huge, towering trees gradually disappeared around me, I felt helpless and sad, and realized that I could not stop it.

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