How does classroom language learning take place? How does an understanding of second language acquisition contribute to language teaching? In answering these questions, Rod Ellis reviews a wide range of research on classroom learning, developing a theory of instructed second language acquisition which has significant implications for language teaching.

Good science is safe science

Biological safety and biosecurity protocols are essential to the reputation and responsibility of every scientific institution, whether research, academic, or production. Every risk--no matter how small--must be considered, assessed, and properly mitigated. If the science is not safe, it is not good science. Now in its fifth edition, Biological Safety: Principles and Practices remains the most comprehensive biosafety reference.

This book presents the guiding principles of laboratory safety, including the identification, assessment,...