Moon the humpback whale completes 5,000km journey – with a broken back

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You grow girl: how Aretha, Nina and Dolly can help save the ash tree

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New Cumbria coalmine: backlash grows as steel industry plays down demand

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The Observer view on the indefensible decision to open a deep coalmine in a climate crisis | Observer editorial

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After years of fanfare the future of drone delivery in Australia remains up in the air

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Blinded by the light: how skyglow pollution is separating us from the stars

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Dear year 12: you’re starting a career at the end of the world – so why not follow your dreams? | Anna Spargo-Ryan

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Japan’s climate policy ‘failed to build on the legacy of Kyoto’

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Cop15: what are the key targets for the biodiversity agreement?

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‘My life is being endangered’: the growing struggle against fishing bans

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