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NATURE

Classifying a group of organisms as a separate species has implications for conservation. But the science behind it is far from settled
Artist Sarah Gillespie used the historic mezzotint technique for her collection of British moths, highlighting both their beauty and the pressures they face
The winners of the 2021 competition of Earth Photo have been announced
As climate change dysregulates weather patterns, cases of pest explosions could increase

Dossier: mining the Arctic

Arctic nations are gearing up to exploit the region’s abundant natural resources
Combining solar farms with biodiversity-boosting plants could result in a win–win situation for the environment
Steps to regulate fisheries and protect marine reserves can be undone at the flick of a switch
Government proposals to change conservation legislation could see vulnerable mammals go unprotected
New research confirms that sharks navigate using the Earth's magnetic field, undergoing long-distance migrations with high precision
The field of bioremediation involves cleaning up toxic waste products with natural materials. The possibilities are endless... 
One company’s plan to drill for oil in the Okavango Delta is raising the ire of environmentalists. As we find out, the promises of community uplift through oil extraction is not always a pathway to prosperity
A new analysis tots up the cost of invasive species worldwide
It’s surprisingly difficult to know why trees die, but understanding this natural process is critical for climate research 
By the late 1980s, almost all mature specimens of the once-iconic elm tree had died in the UK as a result of Dutch elm disease. Mark Rowe investigates attempts to reintroduce elms to Britain 
Scientists are discovering that narwhal tusks reveal a great deal about how sea-ice loss and contamination in the Arctic is changing polar ecosystems
Climate change is bringing earlier, dangerous 'false springs', longer summers and shorter winters
A victory for conservation, South Africa has announced plans to reconsider its captive breeding and canned hunting practices of lions
The UK has made little progress decarbonising heating, but a significant source lies freely available under the feet of a quarter of the population

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