Life and health

Gregory McCarthy

Gregory McCarthy is an American cognitive neuroscientist and the Henry Ford II Professor of Psychology at Yale, known for event-related potential and fMRI studies of word and face recognition.

Gregory P. Asner is an American ecosystem ecologist who maps forests and coral reefs from aircraft and satellites, directing Arizona State University's Center for Global Discovery and Conservation Science.

Oct 10, 2026

Gregory Petsko

Gregory Petsko is an American biochemist known for determining enzyme structures and founding structural enzymology, who in 2002 turned his laboratory toward finding treatments for Alzheimer's disease, Parkinson's disease, and ALS.

Gregory R. Dressler

Gregory R. Dressler, also published as Gregory Dressler, is a molecular biologist at the University of Michigan known for identifying the Pax2 gene and defining its role in kidney development.

Gregory R. Mundy

Gregory R. Mundy (1942–2010) was an Australian-born physician-scientist who showed that cancer destroys bone indirectly by activating osteoclasts, credited with discovering osteoclast activating factor and directing Vanderbilt's Center in Bone Biology.

Gregory S. Barsh

Gregory S. Barsh, known as Greg Barsh, is an American geneticist, Stanford professor emeritus and HudsonAlpha faculty chair, known for cloning the mouse mahogany gene and studying coat-color genetics.

Gregory S. Payne

Gregory S. Payne is an American cell biologist and Professor of Biological Chemistry at UCLA whose yeast genetics showed cells survive and secrete without clathrin.

Oct 10, 2026

Gregory Shwartzman

Gregory Shwartzman (1896–1965) was a Russian-born American bacteriologist at Mount Sinai Hospital in New York who described the Shwartzman phenomenon, a two-injection skin reaction, in 1928.

Gregory Sonnenberg

Gregory F. Sonnenberg is an American immunologist at Weill Cornell Medicine whose laboratory studies innate lymphoid cells, T cells, and the microbiota in intestinal immunity, colon cancer, and immunotherapy resistance.

Gregory Steinberg

Gregory R. Steinberg is a Canadian metabolism researcher and professor at McMaster University in Hamilton, Ontario, co-directing its metabolism research center and known for work on AMPK and metformin.

Gregory Stephanopoulos

Gregory Stephanopoulos, born in Greece in 1950, is a chemical engineer and W. H. Dow Professor at MIT, credited with founding metabolic engineering and elected to the National Academy of Engineering in 2003.

Oct 10, 2026

Gregory Stock

Gregory Stock is an American biophysicist and biotech entrepreneur known for advocating human genetic enhancement, directing a UCLA medicine and technology program, and writing Redesigning Humans, which won the Kistler Book Prize.

Gregory T. Armstrong

Gregory T. Armstrong, known as Greg Armstrong, is an American pediatric oncologist and epidemiologist at St. Jude Children's Research Hospital in Memphis, principal investigator of the Childhood Cancer Survivor Study.

Gregory W. Albers

Gregory W. Albers is a vascular neurologist at Stanford University, director of its Stroke Center since 1992, whose DEFUSE 3 trial helped extend stroke treatment to 24 hours.

Sep 19, 2026

Gregory Winter

Gregory Winter, also known as Greg Winter, is a British biochemist and protein engineer who pioneered humanized antibodies and shared the 2018 Nobel Prize in Chemistry.

Gregory Y. Lauwers

Gregory Y. Lauwers is a gastrointestinal pathologist who led GI pathology at Massachusetts General Hospital and Harvard from 2000 to 2016 and is now a Senior Member at Moffitt Cancer Center in Tampa.

Greig cephalopolysyndactyly syndrome

Greig cephalopolysyndactyly syndrome (GCPS, OMIM 175700) is a rare autosomal dominant disorder caused by GLI3 loss of function at 7p14.1, combining polydactyly, syndactyly, macrocephaly, and hypertelorism.

Greig cephalopolysyndactyly-contiguous gene syndrome

GCPS-CGS is a rare chromosomal deletion syndrome: microdeletions over 1 Mb at 7p encompassing GLI3 cause Greig cephalopolysyndactyly features plus intellectual disability, seizures, and corpus callosum defects.

GREM1

GREM1 (gremlin 1) is a human gene at 15q13.3 encoding a secreted DAN-family BMP antagonist essential for kidney, limb, and lung development; dysregulated in renal fibrosis, several cancers, and hereditary mixed polyposis syndrome.

Grepafloxacin

Grepafloxacin (OPC-17116, Raxar/Vaxar) was a third-generation fluoroquinolone antibiotic by Otsuka and Glaxo Wellcome, approved 1997 for bronchitis and pneumonia, withdrawn worldwide in 1999 for QTc prolongation and cardiac deaths.

Gretchen C. Daily

Gretchen C. Daily is an American ecologist at Stanford University who pioneered valuing ecosystems in decision-making; she co-founded the Natural Capital Project, whose InVEST software is used in more than 185 countries.

Grevillea

Grevillea is a genus of about 360 to 400 species of shrubs and trees in the Proteaceae family, nearly all endemic to Australia and grown for their bird-attracting flowers.

Grevillea cultivars

Grevillea cultivars are named garden forms of the Australian genus Grevillea that must be propagated by cuttings or grafting, since seed does not come true.

Grévy's zebra

Grévy's zebra (Equus grevyi), the largest wild equid at 350–450 kg, is an Endangered zebra of northern Kenya and southern Ethiopia with thin stripes, 46 chromosomes, and about 3,000 animals remaining.

Grewia

Grewia is a genus of Malvaceae shrubs and small trees of the tropical Old World, named for Nehemiah Grew; about 276 accepted species, including phalsa (Grewia asiatica), yield edible fruit, fiber, and medicinal phytochemicals.

Grex (horticulture)

Grex (gx, plural grexes) is the parentage-based name for all offspring of a specific orchid hybrid cross, including its reciprocal; registered with the RHS International Orchid Register, begun with Calanthe Dominii in 1858, distinct from cultivar and Group ranks.

Grey heron

Grey heron (Ardea cinerea), also Gray Heron, a large Ardeidae wading bird of Europe, Asia, and Africa; fish-eating, tree-nesting in heronries; IUCN Least Concern with 500,000-2,500,000 mature individuals.

Grey matter

Grey matter (gray matter) is the darker CNS tissue made of neuronal cell bodies, neuropil, glia, and capillaries with few myelinated fibers; it forms the brain's outer cortex, is measured as GMV by MRI, and atrophies in Alzheimer's, MS, and after COVID-19 hospitalization.

Grey Owl

Grey Owl, born Archibald Stansfeld Belaney (1888–1938) in Hastings, England, was a Canadian conservationist and bestselling author who falsely claimed Apache and Scottish Indigenous ancestry; exposed by the North Bay Nugget the day after his 1938 death.