2012年，旧国标《环境空气质量标准》（GB 3095—2012）修订发布，首次纳入PM2.5限值，堪称中国大气污染治理的里程碑之一。李天威称，在生态环境领域2400多项环境标准中，《环境空气质量标准》是其中唯一经过国务院常务会议部署修订发布的。
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。Feiyi对此有专业解读
What feels like a lifeline for twentysomethings like Bowman—an affordable path to a stable career—has become what the International Brotherhood of Electrical Workers (IBEW) calls a “life or death” situation for companies like Amazon, Meta, and Microsoft: Without an army of electricians to build out data centers, the future of U.S. economic growth could be in jeopardy.
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