• Submit Earth, Atmospheric, and Planetary Sciences Papers
  • Science Sessions: The PNAS Podcast Program
November 24, 2015; 112 (47)

Cover image

Cover image expansion

Cover image: Pictured are adult mesenchymal stem cells grown in a methylacrylate polymer spot, one of thousands on a microarray used in combinatorial development of biomaterials. The Engineering of Biology and Medicine PNAS 100th Anniversary Special Feature, appearing in this issue, reviews the progress made in the past century in biological and medical engineering, along with challenges in the effort to improve quality of life through nanotechnology, biomaterials, immunotherapy, and other fields. See the Introduction to the Special Feature by Mark E. Davis and Robert Langer on page 14423. Image courtesy of Benjamin Larson (Harvard–MIT Health Sciences and Technology, Cambridge, MA).

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