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Since 2013, an expanded front section of PNAS has delved into the stories of science. News Features cover research trends in depth, Inner Workings delve into cutting-edge methods or approaches, Science & Culture articles feature intersections between research and aspects of culture, Core Concepts are substantive explainers of timely terms, and the Journal Club blog highlights recent journal articles of interest. Our Opinion pieces further the debate on topics of interest to scientists. These elements supplement our Profiles and QnAs. All Front Matter materials are freely available.
Podcast
Exploring bivalve shell design
Derek Moulton explains the mathematics behind bivalve shell design.