How the human brain stores and recalls language is truly incredible. Our minds are an ever-expanding lexicon of over 20,000 unique words -- but how do we keep it all in there? This episode is all about your brain and speech, when it comes to learning new words and new languages entirely. Guest: Dr. Lauren Emberson, Assistant professor of psychology at Princeton University. Director of the Laboratory for Perception, Learning and Development - and co-founder of the Princeton Baby Lab.