Mace led the work to determine the criteria for the IUCN’s Red List.

The AIDS activist, also known as the Berlin patient, represented optimism that scientists could find a way to beat HIV.

Simoni spent more than four decades at Stanford University as a teacher, researcher, and administrator in the university’s biology department.

Danforth founded the Donald Danforth Plant Science Center and expanded scientific research at Washington University and beyond campus in St. Louis.

Norris, who founded the research firm Bio-Waves, furthered the study of marine mammals using passive acoustic monitoring technology he designed himself.

The University of Texas Southwestern scientist studied the roles of glucagon and insulin in regulating blood glucose, leading to several successful treatments.

The Salk professor developed the institute’s first neurobiology lab and used it to develop cell lines, describe amyloid β toxicity, and screen for compounds that protect against neurodegeneration.

The retired University of California, Santa Cruz, professor was known for his work on invertebrate reproduction, kelp ecology, and Antarctic marine life.

The Caltech scientist was revered for his work on the neurobiology of birdsong and owls’ ability to home in on their prey.