Invertebrate species have declined 45% in 40 years, study finds

Blue and Green: opulations of invertebrates such as insects, spiders and worms – many of which are essential to the health of ecosystems – have fallen by 45% on average over the past 40 years, according to a new study. The paper, published in the journal Science, reports that invertebrate numbers have plummeted while the human population has boomed and suggests that humans are to blame. In the UK, for example, the numbers of bees, butterflies and beetles have declined by 30% to 60% since the 1970s. The authors......

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