The Atlantic – “A collection of tree seeds that went round and round the moon was scattered far and wide back home. Stuart Roosa, one of the Apollo 14 astronauts, took a small canvas bag of tree seeds with him on the journey. While his fellow astronauts walked on the lunar surface, Roosa and the seeds flew round and round the moon until the crew was ready to come back. A few years after the astronauts returned home, some of the seeds—sycamores, redwoods, pines, firs, and sweetgums—were planted across the United States, to see how they would grow, or simply to keep a piece of moon history close by…That I could find a database of these trees, and go through the experience of identifying and losing the moon tree nearest me in five seconds, is because of Dave Williams, a planetary scientist at NASA’s Goddard Space Flight Center, who 25 years ago took it upon himself to locate as many of them as he could. NASA didn’t keep any records on where the seeds from Apollo 14 ended up, nor did the agency keep up with the trees they became. But Williams does, even though it’s not part of his job description. He is not a tree expert, but he has become, through his efforts, the world’s foremost—and perhaps only—expert on moon trees…”