“Being part of the generation that knows that all actions have consequences, preserving natural resources is a given in any project,” writes Emmanuelle Borne, Editor in Chief of L’Architecture d’Aujourd’hui (AA). Edwin Heathcote, architecture critic of the Financial Times, states that “30 years is really very young for an architect,” and talks about a “positive naivety” of their work. Pritzker Prize for Architecture laureate Alejandro Aravena believes that “finding a balance between becoming an expert and remaining an informed citizen” is the greatest challenge and strength of today’s students and young practitioners. These thoughts and much more are to be found in the enclosed special issue of AA, which is dedicated to the 21 prizewinning projects and their authors in the Next Generation category (less than 30 years of age)of the LafargeHolcim Awards for projects and visions in sustainable construction. The projects are grouped by focal theme: sustainable solutions, local economy & technology, design for all, and innovative engineering.