Stanford University graduate Traci Bliss, PhD, currently engages in various conservation efforts throughout California’s Santa Cruz County. Traci Bliss has focused especially on the movement to preserve local California redwoods in the region.
According to widely accepted authorities, no tree in the world can grow higher than 130 meters, or about 427 feet. Few species even approach this height outside of California redwoods (Sequoia sempervirens), which are generally regarded as the tallest trees in the world. Many believed that the biggest California redwood topped out at 120 meters, or 394 feet, despite historical reports of even taller examples, but about 95 percent of the redwoods that existed 200 years ago have fallen or more recently been cut down, so there is no direct evidence. Other tall trees include the Douglas fir; one historic tree, which is no longer standing, is said to have stood at 410 feet. Less reputable sources throughout the Pacific Northwest and parts of Australia describe redwoods and eucalyptus trees exceeding 130 meters.
More recently, Humboldt Redwoods State Park official Stephen C. Sillett discovered a redwood that measures just over 379 feet, making it the tallest living tree. Affectionately known as Hyperion, its location has not been revealed to the public out of fear that foot traffic might disturb the surrounding ecosystem.