“委员科学讲堂”是全国政协委员履职“服务为民”活动的一项重要内容，旨在发挥政协委员专业优势，为提高社会大众科学素质作出积极贡献。
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The Scream franchise just got fun again, thanks to Scream 7.
US President Donald Trump has announced the reversal of the so-called endangerment finding, a key Obama-era scientific ruling that underpins much of US environmental legislation.
Dawn on a still morning is a majestic spectacle, as sunlight spills silently across the landscape and the Earth gradually emerges from darkness. Sunrise has inspired countless pieces of music striving to express this soundless experience in audible form. But if we could actually hear the sun, it would be deafening.