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Pando, a single quaking aspen in central Utah, is one organism made of about 47,000 genetically identical trunks sharing a root system that covers 106 acres and weighs roughly 6,000 tons, making it possibly the heaviest living thing on Earth and, at an estimated 14,000 years old, one of the oldest

A single quaking aspen in central Utah — 47,000 trunks, one root system, roughly 6,000 tonnes — is likely the heaviest living thing on Earth and, at 14,000 to 80,000 years old, among the oldest. Genetics is finally pinning down how it has held together for that long.

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