‘You basically have free hot water’: how Cyprus became a world leader in solar heating

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‘It’s a warning’: UK nature chief sounds alarm over ecosystem collapse as butterfly numbers halve

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10 children drew their favourite sea creatures. Then Australia’s leading artists responded – in pictures

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Malcolm’s home cover is up 47% despite rarely lodging a claim. Are Australia’s insurers out of control?

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A baby pygmy hippo named Moo Deng: she is all we want to look at | Helen Sullivan

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Phase out urban wood burners in UK to protect children’s health, say doctors

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I’ve studied geopolitics all my life: climate breakdown is a bigger threat than China and Russia | Anatol Lieven

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Revealed: Far higher pesticide residues allowed on food since Brexit

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Campaigners call for unlimited ‘climate card’ UK rail pass

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‘Vast’ carbon sink of mud on seabed needs more protection, study shows

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