What if the cure to tomorrow’s viral outbreak was written into a mushroom that’s been growing since the ’70s? Enter Agarikon (Fomitopsis officinalis)—the long-living shelf fungus once used to treat plague symptoms and now being researched for its powerful antiviral genetics. From its towering, beehive-like form to its decades-long growth on ancient conifers, Agarikon might just be the fungal equivalent of a microbial time machine. Open the vault.