The largest animal in the world is the blue whale, which weighs a massive 150 metric tons. Even so, it's not remotely close to being the largest organism by weight. That title goes to an organism so huge that it's estimated to weigh the equivalent of 40 blue whales. So what is this behemoth? And... where is it? Alex Rosenthal shares the story of the enormous and ancient Pando. [Directed by Lisa LaBracio, narrated by Jack Cutmore-Scott, music by AIM Creative Studios].

Alex Rosenthal: The world's largest organism

The world's largest organism

Surviving potentially 80,000 to 1 million years, Pando's age is its shield, yet modern threats loom large, challenging its legacy.

Pando's struggle against human-imposed challenges underscores the urgency of conservation for the world's largest organism.

Pando, an ancient aspen in Utah, spans millennia, weighing 6 million kg, threatened by human activity and grazing animals.