A bumblebee lands on a flower as workers from the Federation for Nature Protection German inspect an urban garden in Berlin, Germany.

A bumblebee lands on a flower as workers from the Federation for Nature Protection German inspect an urban garden in Berlin, Germany.

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Massive insect decline could have 'catastrophic' environmental impact, study says

Insect populations are declining precipitously worldwide due to pesticide use and other factors, with a potentially "catastrophic" effect on the planet, a study has warned.