The Douglas Fir Group proposes a transdisciplinary framework for second language acquisition (SLA), offering four objectives to this proposal: (a) to advance fundamental understandings of language learning and teaching, including understandings of linguistic development in an additional language, taking into account forces beyond individual learners, (b) to promote the development of innovative research agendas for SLA in the 21st century, (c) to serve as a platform for the development of practical, innovative, and sustainable solutions that are responsive to the challenges of language teaching and learning in our increasingly networked, technologized, and mobile worlds, and (d) to improve communication with a wider range of audiences, especially any and all stakeholders that SLA investigates or whom it hopes to benefit, so they can use SLA work to improve their material and social conditions.