地球是否已過臨界點?

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本文發表於《大眾科學》的前部落格網路,僅反映作者的觀點,不一定代表《大眾科學》的觀點。


生物多樣性喪失。土地利用。淡水利用。氮和磷迴圈。平流層臭氧。海洋酸化。氣候變化。化學汙染。大氣中的氣溶膠負載。

一個由全球30名科學家組成的團隊確定,上述九個環境過程必須保持在特定限度內,否則人類在地球上生存的“安全執行空間”將受到威脅。在一些爭議中,該小組迄今已為九個過程中的七個設定了數值限制(化學汙染和氣溶膠負載仍在確定中)。研究人員還確定,世界已經在三個方面越過了邊界:生物多樣性喪失、氮迴圈和氣候變化。

明尼蘇達大學環境研究所主任、該小組的領導者喬恩·福利在《大眾科學》四月刊的一篇文章中闡述了這些限制及其對人類行為的影響。


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他還在與我們自己的史蒂夫·米爾斯基的播客中討論了這些問題。

福利的團隊深受這項研究工作的感動,製作了一個引人入勝的影片(見下文),透過排版、圖形和充滿活力的音樂,生動地展現了這種情況。您也可以在其研究網站上了解更多關於該團隊工作的資訊。

Mark Fischetti has been a senior editor at 大眾科學 for 17 years and has covered sustainability issues, including climate, weather, environment, energy, food, water, biodiversity, population, and more. He assigns and edits feature articles, commentaries and news by journalists and scientists and also writes in those formats. He edits History, the magazine's department looking at science advances throughout time. He was founding managing editor of two spinoff magazines: 大眾科學 Mind and 大眾科學 Earth 3.0. His 2001 freelance article for the magazine, "Drowning New Orleans," predicted the widespread disaster that a storm like Hurricane Katrina would impose on the city. His video What Happens to Your Body after You Die?, has more than 12 million views on YouTube. Fischetti has written freelance articles for the New York Times, Sports Illustrated, Smithsonian, Technology Review, Fast Company, and many others. He co-authored the book Weaving the Web with Tim Berners-Lee, inventor of the World Wide Web, which tells the real story of how the Web was created. He also co-authored The New Killer Diseases with microbiologist Elinor Levy. Fischetti is a former managing editor of IEEE Spectrum Magazine and of Family Business Magazine. He has a physics degree and has twice served as the Attaway Fellow in Civic Culture at Centenary College of Louisiana, which awarded him an honorary doctorate. In 2021 he received the American Geophysical Union's Robert C. Cowen Award for Sustained Achievement in Science Journalism, which celebrates a career of outstanding reporting on the Earth and space sciences. He has appeared on NBC's Meet the Press, CNN, the History Channel, NPR News and many news radio stations. Follow Fischetti on X (formerly Twitter) @markfischetti

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