Trees and land absorbed almost no CO2 last year. Is nature’s carbon sink failing?

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‘It looked like something out of Star Trek – I expected it to go at warp speed’: the incredible marine life of the Azores – in pictures

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Europe’s medical schools to give more training on diseases linked to climate crisis

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Oysters are back on British menu – but will red tape stifle the shellfish boom?

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‘The job starts straight away’: Adrian Ramsay on his first 100 days as Green MP

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Seeking Alpha’s Quant Rating System Review: The Future of Investing

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‘I felt like a bird god’: why comedian Geraldine Hickey is excited for this year’s Aussie Bird Count

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Top-rated UK water firms ‘dumped 1,374 illegal spills into rivers’

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The big picture: Khashayar Javanmardi explores the decline of the Caspian Sea

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The Observer view on climate change: Hurricane Milton is a portent – but it’s not too late | Observer editorial

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