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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Safety advisers called for changes to "high risk" plansThe Artemis overhaul was announced two days after the release of a report by the lAerospace Safety Advisory Panel that said the original plan to move directly from Artemis II to a lunar touchdown in 2028 using a SpaceX lander did not have the proper margin of safety and did not appear to be realistically achievable.