72,234 articles
Great spotted woodpecker
Great spotted woodpecker (Dendrocopos major), a Eurasian and North African Picidae woodpecker with black-white-red plumage and drumming displays; Least Concern globally, 49-78 million mature individuals, but strongly increasing in Britain and Ireland.
Great tit
Great tit (Parus major), Eurasian tit of the Paridae family, black-headed yellow-breasted garden and woodland bird. IUCN Least Concern, 423–683 million mature individuals; UK population about 2.4 million territories; model species in phenological-mismatch and urban-evolution research.
Great white shark
The great white shark, also called the white shark or white pointer (Carcharodon carcharias), is a large apex predatory shark found in temperate and subtropical seas worldwide.
Great-tailed grackle
Great-tailed grackle (Quiscalus mexicanus, zanate mexicano), a large icterid blackbird of the Americas; males iridescent black with a long keeled tail, females brown and half the size; rapidly expanded north from Texas since 1900.
Greater coucal
Greater coucal (Centropus sinensis), also called crow pheasant, a large non-parasitic cuckoo of the Indian Subcontinent and Southeast Asia; black with rusty wings, red eyes, IUCN Least Concern, monogamous nest-builder.
Greater flamingo
Greater flamingo (Phoenicopterus roseus), largest and most widespread flamingo, across Africa, western Asia, southern Europe; shallow-keeled filter feeder of saline wetlands; Least Concern globally.
Greater kudu
Greater kudu (Tragelaphus strepsiceros), a large spiral-horned African antelope, one of the tallest, with 6-10 white stripes and male horns to 1.8 m; IUCN Least Concern, about 482,000 across eastern and southern Africa.
Greater omentum
Greater omentum (great epiploon): the largest peritoneal fold, a four-layer fatty apron from the stomach's greater curvature over the transverse colon; immune milky spots, gastroepiploic blood supply, omental caking in ovarian cancer, surgical flaps.
Greater racket-tailed drongo
Greater racket-tailed drongo (Dicrurus paradiseus), an Asian Dicruridae passerine with racket-tipped tail streamers, 70–125 g, renowned for context-dependent vocal mimicry of other birds' alarm calls; IUCN Least Concern.
Greater roadrunner
Greater roadrunner (Geococcyx californianus, correcaminos grande): a long-legged ground cuckoo of the southwestern US and Mexico, running about 15 mph, eating reptiles and small mammals, population 1.4 million, IUCN Least Concern.
Greater Swiss Mountain Dog
Greater Swiss Mountain Dog (Grosser Schweizer Sennenhund), the "Swissy": largest and oldest of the four Swiss Sennenhund breeds, a tricolored draft and farm dog recognized by the AKC Working Group in 1995, able to pull over 3,000 pounds.
Greater trochanter
Greater trochanter (trochanter major): the quadrilateral bony eminence on the proximal lateral femur, attachment site for gluteus medius, minimus, piriformis, and obturator muscles; ossifies around age 4, linked to GTPS and fractures.
Greater trochanteric pain syndrome
Greater trochanteric pain syndrome (GTPS), formerly trochanteric bursitis, is chronic lateral hip pain from gluteal tendinopathy; affects 10-25% of people, mostly middle-aged women, treated first with education plus exercise.
Greater Wynnewood Exotic Animal Park
Greater Wynnewood Exotic Animal Park (G.W. Zoo), Joe Exotic's roadside zoo in Wynnewood, Oklahoma, later run by Jeff and Lauren Lowe; closed after USDA license suspension, a DOJ lawsuit, seizure of big cats, and sale with a 100-year zoo ban.
GREB1
GREB1 (growth regulation by estrogen in breast cancer 1) is an estrogen, progesterone, and androgen-regulated gene encoding an ERα cofactor and O-GlcNAc glycosyltransferase required for hormone-dependent breast cancer proliferation and implicated in prostate, ovarian, endometrial, and colorectal cancers.
Grebe
Grebes (Podicipediformes, Podicipedidae) are diving waterbirds with lobed toes and rear-set feet, 22 species worldwide, floating nests, feather-eating habits, and loon-like but unrelated loons.
Greek Shepherd
Greek Shepherd (Ελληνικός Ποιμενικός), also Greek Sheepdog or Hellenikos Poimenikos: a large Greek livestock guardian dog breed from the Rodopi and Pindos mountains, one of three indigenous Greek LGD breeds, used against wolves and bears, not a herder.
Green algae
Green algae: photosynthetic Chlorophyta and streptophyte algae of Viridiplantae with chlorophyll a and b, over a billion years old, and the streptophyte lineage ancestral to all land plants.
Green anaconda
Green anaconda (Eunectes murinus, with the 2024-described northern species E. akayima) is a South American semi-aquatic boa and the world's heaviest snake, up to 227 kg recorded, shorter but far bulkier than the reticulated python.
Green bean
Green bean (snap bean, string bean, haricot vert) is the immature pod of Phaseolus vulgaris, a crop domesticated twice in the Americas. Bush, pole, and half-runner types; 45-60 day harvest; 31 kcal/100 g; lectins destroyed by boiling.
Green fluorescence imaging
Green fluorescence imaging is an optical technique using green fluorophores like GFP and fluorescein to report the location and dynamics of labeled biomolecules in living cells.
Green fluorescent protein
Green fluorescent protein (GFP, avGFP), a 238-residue beta-barrel protein from the jellyfish Aequorea victoria whose Ser65-Tyr66-Gly67 chromophore forms autocatalytically; emits ~505-509 nm green light and is a standard reporter in cell biology.
Green Hill Valley Elephant Camp
Green Hill Valley Elephant Camp (မြစိမ်းရောင်တောင်ကြားဆင်စခန်း) is a family-run retirement camp for retired Myanmar Timber Enterprise logging elephants near Kalaw, Shan State, founded 2011, with no-riding policy, reforestation, and a mobile vet unit.
Green iguana
The green iguana (Iguana iguana) is a large herbivorous lizard native to Central and South America and the Lesser Antilles, listed as Least Concern by the IUCN.
Green manure
Green manure: crops grown to be tilled into soil while green to add organic matter and nitrogen, especially legumes like clover and vetch; ancient practice, revived as a fertilizer-saving, leaching-reducing alternative.
Green party
Green parties: a party family defined by environmentalism plus grassroots democracy, social justice, and non-violence; from New Zealand's 1972 Values Party and Germany's Die Grünen (1980) to Global Greens affiliates worldwide.
Green Party of Aotearoa New Zealand
Green Party of Aotearoa New Zealand (Te Pāti Kākāriki), left-wing NZ party founded 1990, registered 1995, co-led by Marama Davidson and Chlöe Swarbrick; 7.9% and 10 seats in 2020, 12% in 2023, contesting 2026 election.
Green Party of Canada
The Green Party of Canada (Parti vert du Canada) is a federal political party founded in 1983, led by Elizabeth May, the first elected Green member of Parliament.
Green Party of England and Wales
Green Party of England and Wales (GPEW), distinct from the Scottish and Northern Ireland Green parties; green party led by Zack Polanski since September 2025; four MPs and record 6.7% vote share in 2024, strongest-ever 2026 local election results.
Green peafowl
The green peafowl (Pavo muticus) is a large, endangered pheasant native to the forests of tropical Southeast Asia, larger than the Indian peafowl and showing only slight sexual dimorphism.