By Jason Mark
Sequoiadendron giganteum. That's the scientific name for the giant sequoia: the mammoth trees found in California's Sierra Nevada that are the largest organisms on Earth, and among the longest-lived. Biologists estimate that about half of all sequoias live in Giant Sequoia National Monument, a 328,000-acre preserve in the Southern Sierra Nevada established by President Clinton in 2000.
Now that national monument is in jeopardy.