How does it feel to live as a massive, fire-resistant organism?

Ersin Han Ersin: What's it like to be a giant sequoia tree? · 16:35 · Video: TED · Watch at the source

In short: To understand a giant sequoia, you must look beyond its massive scale. Artist Ersin Han Ersin uses multisensory installations to explore the 'umwelt'—the unique sensory experience of an organism—inviting us to imagine the internal tapestry of life within these ancient, towering giants.

The giant sequoia (*Sequoiadendron giganteum*) is a marvel of biological engineering. As the most massive non-clonal organism by volume, it stands as a unique member of the cypress family (*Cupressaceae*). While often mistaken for the tallest trees, it is actually distinct from the coast redwoods, which hold the title for maximum height. Instead, the giant sequoia dominates in sheer bulk, with the General Sherman tree serving as the world's largest living specimen by volume. These giants are found in scattered groves across the western slopes of the Sierra Nevadas. They grow at elevations ranging from 900 to 2,600 metres.

This massive tree is a master of survival. Its compact cones require two seasons to mature and are designed to open immediately following a wildfire. This adaptation, paired with unusually fire-resistant, reddish-brown fibrous bark, allows the species to thrive in environments where fire is a natural occurrence. However, modern challenges like decades of fire suppression and droughts exacerbated by global warming have created fuel-rich conditions that now threaten their survival. The species is currently listed as endangered on the IUCN Red List. This status reflects the increasing vulnerability of their natural habitats.

The scale of these trees is difficult to grasp. The General Sherman tree reaches an estimated height of 83 metres (272.4 feet) and has a base circumference of 31 metres (101.5 feet). Its total estimated weight is approximately 6,167 tons. While once thought to be the oldest living things, tree-ring studies show these giants are typically less than 4,000 years old, making them ancient, but not the oldest, compared to certain bristlecone pines or clonal organisms. The diameter of these trees can reach up to eight metres. Some individual specimens have been dated to over 3,000 years of age.

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