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The decline in the health of nature around the world poses a threat to the UK's security and prosperity, an intelligence committee has concluded in a long-awaited report. The document warns of "cascading risks" from the degradation of some of the planet's most important ecosystems, including conflict, migration and increased competition for resources.

Some scientists fear the risk of a collapse to warm Atlantic currents has not been taken seriously.

Climate records tumbled "like dominoes" in 2023, with temperatures far above any recorded level.