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]

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深圳坚持将整座城市作为新技术的试验场。在福田,人形机器人探索参与地铁安检;在南山,机器人跟随民警街头巡逻;在宝安,机器人提供“不打烊”的夜间政务服务。

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去年还说去火星

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Despite the headline, this isn't really a story about superconductivity—at least not the superconductivity that people care about, the stuff that doesn't require exotic refrigeration to work. Instead, it's a story about how superconductivity can be used as a test of some of the weirder consequences of quantum mechanics, one that involves non-existent particles of light that still act as if they exist.

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