On August 6, 1945, the United States dropped the “Little Boy” atomic bomb on Hiroshima, Japan. Within moments, everything inside the 1‑mile blast radius reached temperatures of 7,000 °F—hot enough to melt steel and vaporize human tissue. The explosion instantly claimed 80,000 lives and reduced most of the city to ash.
Against this backdrop of devastation, a handful of Ginkgo biloba trees—often called the “living fossil”—stood on the edge of the blast zone and survived. Remarkably, by spring the following year, green shoots burst through the scorched ground, offering a symbol of hope to the survivors.
Shinzo Hamai, Hiroshima’s first post‑war mayor, recalled the moment to the University of Oxford: “Less than a year after the destruction, spring pushed a green shoot through the A‑bomb desert—where rumor held that nothing would grow for 75 years. The powerful emotions stirred by a little sign of life would be hard for anyone [to understand] who is not a hibakusha or a Hiroshima resident.”
What enabled these trees to endure such extreme conditions? Their resilience is rooted in a lineage that stretches back 290 million years. Ginkgo biloba has no close living relatives; its ancestors flourished during the age of the dinosaurs, surviving multiple mass extinctions and drastic climate shifts.
Unlike most trees, Ginkgos display an extraordinary ability to defy senescence. A 2020 study in the Proceedings of the National Academy of Sciences sequenced the RNA of trees ranging from young saplings to individuals several centuries old. The researchers found that gene‑expression patterns related to growth, defense, and stress response remain virtually unchanged with age, meaning the trees’ immune systems do not weaken over time.
Key to their durability is the production of flavonoids and antioxidants—molecules that neutralize free radicals and resist pathogen attack. These compounds, combined with a genetic architecture that lacks the senescence pathways found in most plants, allow Ginkgo biloba to grow for thousands of years. Richard Dixon, one of the study’s authors, told the University of Northern Texas, “When the external stressors are removed and conditions are optimal, Ginkgo biloba could go on forever.”
Beyond its scientific intrigue, the Ginkgo tree has long symbolized endurance and renewal in East Asian culture. Temples across China and Japan are often lined with Ginkgos, and ancient texts praise the species for its supposed anti‑aging properties and brain‑boosting benefits.
Today, Ginkgos also play a practical role in climate‑change mitigation. Their tolerance of polluted air, combined with efficient oxygen production and low carbon‑dioxide requirements, makes them ideal candidates for urban greening projects.
Despite these strengths, habitat loss and over‑harvesting have reduced global populations. In 1998, the International Union for Conservation of Nature (IUCN) listed Ginkgo biloba as Endangered. Recent conservation plantations across Europe and Asia are helping to reverse this trend. For more information on the species’ conservation status, visit the IUCN Red List entry: IUCN Ginkgo biloba.
Curious about how forests are responding to climate change? Explore related research on tropical forests and the remarkable resilience of California Redwoods.
