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Conservation experts urge the prime minister to take a lead on reversing the decline in nature.
Prof Lawton writes: « Nearly half of our species are in decline and about a quarter of our mammals are threatened with national extinction. These losses represent a decline in resilience of the ecosystems upon which we depend and a loss of experience and joy: there are too few places left where a child can walk through a cloud of butterflies or sit amongst a rainbow of flowers. »
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