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加拿大东部多地遭高温和空气污染双重夹击
news flash· 2025-07-15 03:53
加拿大东部多地遭遇高温和空气污染的双重夹击。加拿大环境部发布高温预警,加拿大东部多个地区迎 来高温天气,白天最高气温可能在29至32摄氏度之间,体感温度则在35至40摄氏度之间。同时,加拿大 环境部还发布空气质量警报称,受安大略省北部森林大火产生的烟雾影响,大多伦多地区空气质量恶 化,能见度降低。14日当天,该地区的空气质量位居全球最差之列。加拿大环境部建议人们减少户外活 动时间,尽量关闭门窗。(央视新闻) ...
从不吸烟为何也会患肺癌?中国学者一作Nature论文:或与二手烟无关,空气污染才是主要原因
生物世界· 2025-07-04 03:42
长期以来,人们一直认为肺癌是吸烟者的疾病。然而,随着世界许多国家和地区的烟草使用量的下降,一个令人担忧的趋势出现了: 从不吸烟者患肺癌的比例正 在上升 。 撰文丨王聪 编辑丨王多鱼 排版丨水成文 肺癌 是全世界发病率最高的癌症 ,也是全世界癌症死亡的最主要原因,据 世界卫生组织国际癌症研究机构 (IARC) 于 2024 年 发布的最新评估数据,肺癌每 年新增 248 万例,导致 180 万人死亡 。 从不吸烟者肺癌 (LCINS) 约占所有肺癌病例的 25%,这类肺癌对女性的影响尤为严重,尤其是亚裔女性,而且在东亚国家比在西方国家更为普遍。 一项发表于 Nature 期刊的最新研究,提供了令人信服的基因组证据,表明了 空气污染、 传统中草药以及其他环境因素是从不吸烟者肺癌的主要潜在因素。 | 国际顶尖学术期刊 | Nature | 。论文通讯作者为美国国家癌症研究所 | Maria Teresa Landi | | 研究员和加州大学圣地 | | | | --- | --- | --- | --- | --- | --- | --- | --- | | 该研究以: 亚哥分校 | The mutagenic f ...
马斯克旗下xAI数据中心空气质量检测结果引发争议
Huan Qiu Wang· 2025-06-26 02:48
Core Viewpoint - xAI's Colossus data center in Memphis, Tennessee, has raised concerns among local residents regarding air pollution due to its use of natural gas turbines for power generation, leading to scrutiny from relevant authorities [1] Air Quality Testing - The Memphis city government commissioned a third-party organization to conduct preliminary air quality tests on June 13 and 16, which showed that levels of ten pollutants, including benzene, toluene, formaldehyde, nitrogen dioxide, sulfur dioxide, carbon monoxide, and particulate matter, did not reach hazardous standards [1] - The Southern Environmental Law Center (SELC) has questioned these findings, representing the National Association for the Advancement of Colored People (NAACP), and is threatening legal action against xAI, citing the omission of ozone pollution in the tests [1][5] Health Concerns - SELC highlighted that ozone pollution, commonly associated with smog, can cause respiratory difficulties and is linked to increased rates of asthma and other respiratory diseases [5] Testing Locations and Methodology - Air quality tests were conducted at three locations: downtown Memphis, Whitehaven community, and Boks Town community, with Boks Town being the closest to the xAI data center, approximately two miles away [5] - The testing equipment operated for 10 to 13 hours at each site, but wind direction on testing days may have affected the ability to detect pollutants at these locations [5] - At the downtown testing site, formaldehyde was detected, but its concentration was within the expected range for urban areas, located over eight miles from the xAI data center [5] Methodological Concerns - SELC criticized the testing methods, noting that the equipment was placed directly on building surfaces in Boks Town and Whitehaven, which could interfere with results [6] - According to the U.S. Environmental Protection Agency (EPA), air sensors should be positioned at least six feet away from ground level and other potential sources of interference [6]
加拿大野火烟尘污染扩散至美国
news flash· 2025-05-31 09:11
Core Viewpoint - Wildfires in Canada since May 26 have led to the spread of smoke and air pollution into several states in the United States, affecting air quality levels [1] Group 1: Air Quality Impact - The smoke from Canadian wildfires has caused air quality deterioration in parts of Minnesota and Wisconsin, with some areas reaching "orange" air quality levels [1] - Most of Wisconsin, along with the upper peninsula of Michigan, eastern Iowa, and northwestern Illinois, have reported "yellow" air quality levels [1] - The U.S. Environmental Protection Agency categorizes air quality into six levels, ranging from green (best) to maroon (worst) [1]
加拿大野火肆虐 烟尘污染扩散至美国
news flash· 2025-05-31 07:49
金十数据5月31日讯, 近日,加拿大多地野火肆虐,产生的烟尘正随风向南扩散,在相邻的美国一些州 造成空气污染。美联社援引美国环境保护署空气质量监测网站AirNow消息报道,当地时间5月30日上 午,美国明尼苏达州阿罗黑德市一带空气质量恶化为"橙色"。"橙色"空气质量对慢性病患者、老人、儿 童等敏感人群健康影响较大,这些人应减少户外活动时间。 (新华社) 加拿大野火肆虐 烟尘污染扩散至美国 ...
香港进一步降低发电厂排放限额
news flash· 2025-05-30 03:50
金十数据5月30日讯,香港特区政府今日在宪报刊登《指明牌照分配排放限额第十份技术备忘录》,进 一步降低发电厂在2030年及以后空气污染物的排放限额,提升香港及珠江三角洲地区的空气质素。据了 解,《第十份技术备忘录》是根据香港《空气污染管制条例》颁布,把电力行业于2030年及以后的二氧 化硫、氮氧化物和可吸入悬浮粒子的每年排放总量上限分别降低至2302吨、8350吨和317吨,与现有 《第九份技术备忘录》内所载列的2026年电力行业排放总量上限比较,分别进一步收紧19%、25%和 14%。 (大湾区之声) 香港进一步降低发电厂排放限额 ...
伊朗卫生部宣布阿巴斯港进入紧急状态
news flash· 2025-04-26 17:39
Core Points - The Iranian Ministry of Health has declared a state of emergency in Abbas Port following an explosion that has caused ongoing fire and severe air pollution [1] - Local rescue teams are actively engaged in firefighting efforts to control the situation [1] - The Ministry of Health has instructed local health departments to form health teams and implement emergency measures to protect public health, highlighting the potential release of pollutants such as ammonia, sulfur dioxide, and nitrogen dioxide from the explosion [1]