CLIMATE CHANGE

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In the 1980s, the terms global warming and climate change were popularised, the former referring only to increased surface warming, the latter describing the full effect of greenhouse gases on the climate. Global warming became the most popular term after NASA climate scientist James Hansen used it in his 1988 testimony in the U.S. Senate. Global warming usually refers to human-induced warming of the Earth system, whereas climate change can refer to natural as well as anthropogenic change. The two terms are often used interchangeably.

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