Brazil environment minister’s dismissal of slain Amazon defender stirs outrage

Ricardo Salles’ comments fuel criticism of administration’s stance, which environmentalists say is excessively pro-business

Brazilian environmental groups have blasted Jair Bolsonaro’s environment minister after he dismissed the murdered Amazon rain forest defender Chico Mendes as “irrelevant”.

Related: Climate change a 'secondary' issue, says Brazil's environment minister

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Plummeting insect numbers ‘threaten collapse of nature’

Exclusive: Insects could vanish within a century at current rate of decline, says global review

The world’s insects are hurtling down the path to extinction, threatening a “catastrophic collapse of nature’s ecosystems”, according to the first global scientific review.

More than 40% of insect species are declining and a third are endangered, the analysis found. The rate of extinction is eight times faster than that of mammals, birds and reptiles. The total mass of insects is falling by a precipitous 2.5% a year, according to the best data available, suggesting they could vanish within a century.

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The battle for the future of Stonehenge

Britain’s favourite monument is stuck in the middle of a bad-tempered row over road traffic. By Charlotte Higgins

Stonehenge, with the possible exception of Big Ben, is Britain’s most recognisable monument. As a symbol of the nation’s antiquity, it is our Parthenon, our pyramids – although, admittedly, less impressive. Neil MacGregor, the former director of the British Museum, recalls that when he took a group of Egyptian archaeologists to see it, they were baffled by our national devotion to the stones, which, compared to the refined surfaces of the pyramids, seemed to them like something hastily thrown up over a weekend.

Unlike those other monuments, though, Stonehenge is more or less a complete mystery. Nobody knows for sure why, or by whom, this vast arrangement of boulders was erected on Wiltshire’s downlands, in the south of England, about 5,000 years ago. Into this void have rushed myriad theories, from the academically sober to the blatantly fantastic. Over the centuries, its construction has been confidently credited to giants, wizards, Phoenicians, Mycenaeans, Romans, Saxons, Danes and aliens. (According to one medieval theory, Merlin had it transported from Ireland to serve as the funeral monument for Britons slaughtered by Hengist, the treacherous Saxon.)

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Diver filmed with huge great white: sharks must be ‘protected not feared’

Ocean Ramsey, a shark researcher, came face-to-face with what could be one of the largest great whites ever recorded

Two shark researchers who came face to face with what could be one of the largest great whites ever recorded are using their encounter as an opportunity to push for legislation that would protect sharks in Hawaii.

Ocean Ramsey, a shark researcher and conservationist, told the Associated Press that she encountered the 20ft (6m) shark Tuesday near a dead sperm whale off Oahu. The event was documented and shared on social media by her fiance and business partner, Juan Oliphant.

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Extinct mammoths could be given protected status in bid to save elephants

Proposal is intended to protect African elephants from being poached for their tusks

The long-extinct woolly mammoth could gain protected status in an unprecedented attempt to save the African elephant from the global ivory trade.

If approved, the protection of the mammoth under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (Cites) could prove vital in saving its modern relatives. The proposal by Israel would close a loophole that enables the trafficking of illegal elephant ivory under the guise of legal mammoth ivory, which is almost identical in appearance.

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