Moon Trees: The Story of the Seeds That Went to Outer Space

NASA, the U.S. space agency, has learned a lot since the 1940s about the effects of extreme conditions during space travel on the human body, from bone density loss to changes in the immune system to effects of radiation. But what do we know about how space travel affects plants? One of the early attempts to find out came in 1971 when the Apollo 14 mission carried hundreds of tree seeds to the moon.