Mark Zylka has been recognized by the world’s largest general scientific society for his contributions to the fields of biological and medical sciences. Election as an AAAS Fellow is an honor bestowed upon AAAS members by their peers. This year 396 members have been awarded this honor by AAAS because of their scientifically or socially distinguished efforts to advance science or its applications. This year’s AAAS Fellows will be formally announced in the AAAS News & Notes section of the journal Science on November 24, 2017. New Fellows will be presented with an official certificate during the 2018 AAAS Annual Meeting in Austin, Texas on February 17.