From left, Dr. Thomas Elias, Director of the US National Arboretum, Dr. Deborah Gangloff, Executive Director of American Forests, Mr. Alan Ladwig, Senior Advisor to the NASA Administrator, and Dr. David Williams, Planetary Curation Scientist and curator of NASA webpage on Moon Trees pose for a photograph after planting a second generation Sycamore "moon" tree in celebration of Earth Day and the 40th Anniversary of the first Apollo moon landing at the US National Arboretum, Wednesday, April 22, 2009, in Washington. During the Apollo 14 mission in 1971, NASA astronaut Stuart Roosa, a U.S. Forest Service smoke jumper, carried seeds from a Loblolly Pine, Sycamore, Sweet Gum, Redwood and Douglas Fir which were later germinated by the U.S. Forest Service that grew into first-generation "moon" trees. These trees are planted throughout the country with the Sycamore being the first at the Arboretum. Photo Credit: (NASA/Bill Ingalls)
