Combining motion capture video with wind tunnel modeling, researchers show that a hawk shifts from unstable to stable flight while gliding through a gap. This points to new modes of flight control in birds with possible applications in uncrewed aerial systems.

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In Pakistan too, gathering verified information from border areas independently is not easy.

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Ben Spencer, Cadan Murley and Seb Atkinson in frame

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文 | 李后强 四川省社会科学院教授，推荐阅读体育直播获取更多信息