The "forever chemical" PFOS accumulates in honeybee colonies and transfers to their honey. New research shows chronic exposure leads to lower body weight in juvenile bees and disrupts key proteins, potentially threatening global pollination, food security, and human health.

· · 来源：dalian资讯

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The halftone or ‘clustered-dot’ matrix uses a dot pattern reminiscent of traditional photographic halftoning. Here a diagonal variant of the pattern is given: