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科学美国人60秒 SSS Climate Change Might Shrink Fish

Climate Change Might Shrink Fish 气候变化会迫使鱼类变小 As the world's oceans heat up, salmon are migrating earlier. Plankton are shifting their range. But warmer water temperatures also mean warmer fishand faster-running metabolisms. 随着

发表于:2018-12-24 / 阅读(61) / 评论(0) 分类 2017年Scientific American(九)月

英语听力：自然百科 海洋天堂大堡礁:堡礁内外—23

This bleaching occurs because corals can only live in a narrow temperature range, healthy corals get their color from microscopic algae living in their tissues, these manufacture food for the corals by photosynthesis, but when the temperature rises j

发表于:2018-12-26 / 阅读(60) / 评论(0) 分类 自然百科2014年

英语听力：自然百科 海洋天堂大堡礁:堡礁内外—1

The great barrier reef is huge, it stretches for over 2,000 kilometers along Australia's north east coast, so vast it's clearly visible from space, and it's not simply a collection of coral gardens, but a network of very different habitats, it means

发表于:2019-01-16 / 阅读(64) / 评论(0) 分类 自然百科2014年

科学美国人60秒 SSS 气候变暖为北极熊健康带来福音

Rising Temps Lower Polar Bear Mercury Intake气候变暖为北极熊健康带来福音 As climate change warms the Arctic, sea ice there is disappearing at record ratessea ice that polar bears prefer to prowl. As a result, some bears are spending mor

发表于:2019-01-20 / 阅读(195) / 评论(0) 分类 2017年Scientific American(六)月

英语听力：自然百科 海洋天堂大堡礁:堡礁内外—15

But that pales into insignificance, when compared to the daily vertical migration of these mircoscopic animals called zooplankton. At sunset, all of these tiny creatures swin upwards, and under cover of darkness, they grease on floating algae close t

发表于:2019-01-22 / 阅读(58) / 评论(0) 分类 自然百科2014年

公众人物毕业演讲 第170期:比尔·奈马萨诸塞大学2014(17)

And are we alone?. 二是我们是否唯一。 Those 2 deep questions drive us all through our whole lives. 这两个深刻问题伴随着我们的整个生命。 And to answer those 2 questions. 要回答这两个问题。 we have to continue to exp

发表于:2019-01-25 / 阅读(59) / 评论(0) 分类 公众人物毕业演讲
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