Wiktionary:Word of the day/2024/June 5

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greenhouse gas n

Any gas (such as carbon dioxide, a chlorofluorocarbon (CFC), or methane) that contributes to the greenhouse effect when released into the atmosphere by absorbing infrared radiation emitted by a planet's surface, thus increasing the surface temperature. Today is World Environment Day, which is recognized by the United Nations to promote worldwide awareness of the need and action to protect the environment. The United Nations Conference on the Human Environment in Stockholm, Sweden, began on this day in 1972.

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