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The Great Barrier Reef, spanning northeast Australia, is the world’s largest coral reef and a delicate ecosystem threatened by climate change and human activity. For a detailed description, click on the article title.
The Great Game was a 19th-century struggle between the British and Russian empires over control of Central Asia, marked by rivalry, espionage, and military campaigns. For a detailed description, click on the article title.
The Great Kanto Earthquake of 1923 devastated Tokyo and Yokohama, killing an estimated 140,000 people and reshaping Japan’s urban and social landscape. For a detailed description, click on the article title.
The Great Lakes—Superior, Michigan, Huron, Erie, and Ontario—are North America’s largest freshwater system, vital for ecosystems, commerce, and communities. For a detailed description, click on the article title.
The Great Plains, a vast central North American grassland, rise to 4,000 feet and are known for their treeless expanse, agriculture, and ecological significance. For a detailed description, click on the article title.
The Great Rift Valley, stretching from Syria to Mozambique, is a vast tectonic trough shaped by plate separation, famed for its stunning landscapes and rich human history. For a detailed description, click on the article title.
The Great Trek, a Boer migration from the Cape Colony in the 1830s, aimed to escape British rule and create independent republics in South Africa’s interior. For a detailed description, click on the article title.
Great Zimbabwe, founded by the Shona around 1000 CE, became a thriving gold-trading city famed for its impressive stone structures and political power. For a detailed description, click on the article title.
The Green Revolution introduced high-yielding seeds, mechanization, irrigation, and chemicals, transforming traditional agriculture and boosting global food production. For a detailed description, click on the article title.
The greenhouse effect traps heat in Earth’s atmosphere, warming the planet; human activities have intensified this process, driving global warming. For a detailed description, click on the article title.