phase[classno] = 2;
In total, some 5,000 people work in Antarctica during its summer months, across 80 research stations operated by about 30 countries.
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The history of fake news
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Nations underestimate greenhouse gas emissions from wastewater systems by amounts ranging from 19% to 27%, in part caused by a reliance on 2006 IPCC guidance rather than incorporating updates from a 2019 refinement [Nature Climate Change]
· 吴鹏 · 来源：cook资讯