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Global temperatures may already be up by 1.5 degrees

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Global temperatures may have already risen by 1.5 degrees since pre-industrial times, according to an Australian-led research team. They warn that warming could reach 2 degrees by the end of the decade, much sooner than predicted. Their findings come from an unusual source - rare, sea sponges that have a lifespan of hundreds of years.
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Climate change
Environment
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