LENS director Dr. Fumiko Hoeft and LENS postdoc Dr. Roeland Hancock, along with Dr. Jason Zevin (USC) organized a one-day symposium on “Biological and Environmental Factors that Impact Multilingualism.” The symposium discussed endogeous and exogeneous sources of variability relevant to cross-linguistic and cross-cultural studies of language and literacy. An exciting array of keynotes took place at the conference, including talks on cognitive models, linguistic background, music and language, and environment.