Spread across 106 acres of Utah, Pando looks like an ordinary aspen forest — but every trunk is a stem of a single organism sharing one vast root system. At roughly 13 million pounds it may be the heaviest living thing on Earth, and possibly one of the oldest, alive since the last Ice Age. After tens of thousands of years, it is now quietly dying on our watch.
The essentials — 47,000 genetically identical trunks, one connected root network, and why biologists count the whole grove as a single tree rather than a forest.
The Natural History Museum of Utah weighs the estimates that push Pando's age toward 80,000 years — old enough to have been alive during the last glaciation.
Brigham Young University researchers explain the sudden die-offs striking aspen clones like Pando, and what stress does to an organism built to live for millennia.
Mule deer and cattle eat every new shoot before it can mature, so Pando has stopped renewing itself — an ancient giant slowly aging out with no young to replace it.
A local news report on how uneven decline is fracturing the single organism into disconnected patches — and the fencing effort trying to hold it together.
PBS Nature's short film on what it actually feels like to walk through a single 106-acre tree — and what we stand to lose if we can't save it.