加拿大野火烟使美国空气质量恶化,专家们认为气候变化是其根本原因。 Canadian wildfire smoke worsened U.S. air quality, with experts citing climate change as the root cause.

来自加拿大的野火烟严重地降低了美国中西部部分地区的空气质量,引发了政治反弹,并呼吁美国环保局进行调查,但专家说,真正的问题是气候变化,气候变化正在助长整个北美更长、更密集的火灾季节。 Wildfire smoke from Canada has severely degraded air quality across parts of the U.S. Midwest, prompting political backlash and calls for an EPA investigation, but experts say the real issue is climate change, which is fueling longer, more intense fire seasons across North America. 加拿大2025年的火灾季节正按计划成为第二大火灾季节,数百万公顷土地被烧毁,但科学家们强调,全球变暖(而不是国家政策)是火灾活动和跨境烟雾增加的主要原因。 While Canada’s 2025 fire season is on track to be its second worst, with millions of hectares burned, scientists emphasize that global warming—not national policies—is the primary driver behind rising fire activity and transboundary smoke. 一项自然研究发现,由于有害的PP2.5污染,2023年的火灾在全世界造成数以万计的过早死亡,包括美国和欧洲数以千计的人。 A Nature study found the 2023 fires caused tens of thousands of premature deaths worldwide, including thousands in the U.S. and Europe, due to harmful PM2.5 pollution. 专家们敦促合作而不是责怪,强调长期解决办法需要国际气候行动、改进防火工作以及更有力的公共卫生措施,以应对共同的风险。 Experts urge cooperation over blame, stressing that long-term solutions require international climate action, improved fire prevention, and stronger public health measures to address shared risks.