Book excerpt: This book opens with Angelika Kratzer and Luigi Rizzi talking about contemporary issues, such as non-recursiveness of focus and the semantics of topics. The chapters climb down the spine from the left periphery to DP: the value of subjunctive across the history of German, expressive expressions in Brazilian Portuguese, left and right dislocation and the speaker's perspective in Italian, Brazilian double subjects and left dislocated topic, long versus short wh-movement in Brazilian Portuguese and Quebec French, low adverbs and the raising of the verb in Brazilian Portuguese, ellipsis and null objects in Brazilian and European Portuguese, and bare singulars in Brazilian Portuguese. The chapters propose original accounts for language variation and historical changes, most of them focusing on Brazilian Portuguese, a challenge to syntax and semantics. Thus, the volume contributes to Brazilian and Portuguese Linguistics, as well as to general and contemporary research on syntax and semantics of natural languages.