Teaching science in the field provides unique opportunities to investigate the natural world. As in the classroom, lessons designed to foster meaningful learning, provide hands-on activities, and promote student inquiry can be effectively implemented in the world's largest laboratories, the natural and built environments of the outdoors. This digest discusses a variety of settings, locales, and experiences that can be used for science investigations in the field and highlights various aspects and issues involved. Topics discussed include: (1) Using Urban Environments; (2) A Variety of Experiences; (3) Subject Integration; (4) Overcoming Gender Bias; and (5) Planning for Success. Also included are internet resources. Contains 42 references. (JRH)