When I first read the subject line, I expected to see some outlandish claim that the trees had accumulated enough radioactive material to generate enough heat t

When I first read the subject line, I expected to see some outlandish claim that the trees had accumulated enough radioactive material to generate enough heat to make the tree spontaneously ignite. The actual concern is that radioactive materials sequestered in the trees might be re-released into the atmosphere if the trees were to catch fire. That is an unsettling possibility.