William Bryant Logan is a certified arborist and president of Urban Arborists, Inc., a Brooklyn-based tree company. Logan has won numerous Quill and Trowel Awards from the Garden Writers of America and won a 2012 Senior Scholar Award from the New York State chapter of the International Society of Arborists. He also won an NEH grant to translate Calderon de la Barca. He is on faculty at NYBG and is the author of Oak and Dirt, the latter of which was made into an award-winning documentary. The same filmmakers are currently planning a documentary made from Air. He lives in New York City.