Chemicals from our phone and TV screens are accumulating in the brains of endangered dolphins and porpoises. New research shows these "liquid crystal monomers" from e-waste can cross the blood-brain barrier and may disrupt DNA repair, highlighting the growing impact of electronics on marine life.

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“十五五”规划建议提出:“形成既‘放得活’又‘管得好’的经济秩序。”从以前的“管得住”到现在的“管得好”,一字之差,标准更高、意蕴深远。“管得好”,不是“管得多”,也不是“简单管”,而是要在市场发挥决定性作用的前提下,管好那些市场管不了或管不好的事情。

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If we think about this algebraically, what we really want to do is express the input pixel as the weighted sum of palette colours. This is nothing more than a linear combination of palette colours with weights :

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