The world risks a “catastrophic collapse of nature’s eco-system” due to plummeting insect numbers, scientists said.

More than 40% of insect species are declining and a third are endangered, researchers found in a new ‘study of studies’.

The rate of extinction is eight times faster than that of mammals, birds and reptiles.

The study’s authors suggested the way food is farmed today has speeded up the decline in insect numbers.

They said that, without remedy, the effect of insect extinction would threaten human existence.

“The repercussions this will have for the planet’s ecosystems are catastrophic, to say the least,” they wrote.

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