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Ecology is the study of organisms and their interactions with the environment, exploring biodiversity, ecosystems, and human impacts. For a detailed description, click on the article title.
Extensive land uses, like hunting and herding, span 60M sq km, supporting 500M with low-input, vast-area livelihoods. For a detailed description, click on the article title.
External costs, unpriced effects of goods, burden Earth’s 510M sq km with $10T in ecological and social tolls yearly. For a detailed description, click on the article title.