CARBON DIOXIDE — CO2
Scottish chemist Joseph Black discovered and isolated this potent greenhouse gas in the 1750s. At that time, man-made CO2 emissions were about three million tones per year. But by 2005, emissions from fossil fuels alone were 7.9 billion tones, with another 1.5 billion tones caused by forest clearing. Carbon dioxide is the second most important greenhouse gas (after water vapor), trapping heat in our atmosphere and increasing global temperatures via the greenhouse effect. Emissions continue to climb, so unless there's a drastic turnaround, expect the sea level rises, extreme weather events and mass extinctions associated with a rapidly warming globe.
二氧化碳CO2
十八世纪五十年代,苏格兰化学家约瑟夫·布莱克发现并分离了这种强有力的温室气体。当时,人造二氧化碳排放每年约有三百万吨。但到2005年,仅矿物质燃烧一项就造成七十九亿吨二氧化碳被排放,另外森林砍伐也产生十五亿吨。排在水蒸气之后,二氧化碳是第二大重要的温室气体,它阻止我们的大气散热,并通过温室效应增加全球温度。目前其排放量还在上升,因此,除非有急剧转变,否则迅速变暖的地球将遭遇海平面上升,极端气候增加和大规模物种灭绝等一系列难题。
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2020-09-15
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