Bo Thompson: In the Malheur National Forest in Michigan there is a single fungus that stretches nearly four square miles underground with a combined weight of around 35000 tons and an estimated lifespan of around 8500 years. It's the oldest of five humongous funguses within the forest, each genetically distinct.

In the Malheur National Forest in Michigan there is a single fungus that stretches nearly four square miles underground with a combined weight of around 35000 tons and an estimated lifespan of around 8500 years. It's the oldest of five humongous funguses within the forest, each genetically distinct.