
为什么我们要把全球变暖控制在1.5℃以内?
《巴黎协定》设定的目标是将全球升温控制在不超过工业化前2℃以内,最好是1.5℃;1.5℃被认为是一个临界阈值,因为超过这一界限,气候变化的影响预计会变得越来越严重;如果我们继续以目前的速度排放温室气体,到本世纪末,全球将升温2.7℃。
Jennifer Chu covers mechanical engineering, mathematics, physics, aeronautics, astronautics, and earth, atmospheric, and planetary sciences as a writer for the MIT News Office.
《巴黎协定》设定的目标是将全球升温控制在不超过工业化前2℃以内,最好是1.5℃;1.5℃被认为是一个临界阈值,因为超过这一界限,气候变化的影响预计会变得越来越严重;如果我们继续以目前的速度排放温室气体,到本世纪末,全球将升温2.7℃。
The Paris Agreement aims to avoid climate change and limit global warming to 1.5 degrees Celsius. Meeting this target will require major efforts.
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有大量证据表明,我们睡眠的时长会影响我们在解决数学问题、进行对话甚至阅读本文等认知任务上的表现。较少探讨的是睡眠不足是否会影响我们走路或进行其他被认为是精神负担较小的活动方式。
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Researchers at MIT have discovered how a tissue’s cells are arranged can serve as a fingerprint for the tissue’s 'phase', which could diagnose potential cancers.
Dinosaurs may have lived in social herds as early as 193 million years ago, according to a scientific discovery made in southern Patagonia.