Rhino that lost horns in attack back in South African wild after 30 operations

Six years ago poachers hacked off Sehawukele’s horns; now he’s back in a game reserve

A 10-year-old white rhino whose horns were brutally hacked off has returned to the wild after 30 operations over six years to repair the gash in his face.

His rescuers named the bull Sehawukele, meaning “God have mercy on us”. Called Seha for short, he was found by police stumbling near a fence in a reserve, so disfigured that he could barely hear or eat.

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HS2 protesters plan ‘nationwide day of action’ over rail expansion

Activists say bill being presented to parliament sanctions irreversible destruction of environment

A nationwide day of action against HS2 – involving banner drops, solidarity protests and a Twitter storm – is planned for Monday as the bill to expand the line beyond Crewe is presented to parliament.

Environmental activists say the bill will “sanction immense and irreversible destruction to the environment” and want to raise awareness of HS2’s “continuing ecocide, corruption and financial mis-management”.

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Finland, Sweden and Norway to cull wolf population

Conservation groups appeal to EU to take action against slaughter they allege flouts rules

Finland is joining Sweden and Norway in culling wolves this winter to control their population, as conservation groups appeal to the European Union to take action against the slaughter.

Hunters in Sweden have already shot dead most of their annual target of 27 wolves, while Finland is to authorise the killing of 20 wolves in its first “population management cull” for seven years.

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Thank you for giving generously to the Guardian and Observer charity appeal

This weekend is the last chance to donate to our 2021 appeal supporting those on the frontline of the climate emergency

In this year’s Guardian and Observer charity appeal we have supported communities and individuals hit hardest by the climate emergency, people who have seen their lives upended and livelihoods lost by extreme weather. It’s a topical issue, and not going away – and there is still time to donate: so far we have raised over £800,000.

Our appeal is shaped by vivid stories of climate emergency: floods, drought and wildfires; from reindeer killed by unnatural arctic heat to chronic crop failure by the shores of Lake Victoria. At its heart, however, lies inequality and poverty: the stark truth is the countries least responsible for global emissions have by far suffered worst from climate-induced disasters.

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Feed supplier to UK farm animals still linked to Amazon deforestation

Cargill, which had pledged to clean up its supply chain, sells feed for many of the billion chickens killed annually in UK

A major supplier of animal feed is still buying soya and corn from a farm linked to deforestation in the Amazon, despite having pledged to clean up its global supply chains.

Cargill, a giant agricultural multinational that sells feed to British chicken farms, buys crops from a farm growing soybeans on deforested land in the Brazilian Amazon.

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‘They saw bigger things’: Richard Leakey, Edward O Wilson and Thomas Lovejoy remembered

Friends and colleagues pay tribute after the recent deaths of these groundbreaking naturalists, who shifted our understanding of the world and our future

Over Christmas and the new year, three of the world’s leading naturalists died. Thomas Lovejoy, a conservation biologist credited with popularising the term “biodiversity” and a passionate defender of the Amazon, died on 25 December. A day later, Edward O Wilson, known to many as the “modern-day Darwin”, died in Burlington, Massachusetts. On 2 January, Richard Leakey, a world-renowned Kenyan conservationist who helped establish Africa as the birthplace of humankind, died at his home in Nairobi.

From presidents to undergraduate students, thousands have paid tribute to the three men, whose achievements range from developing theories on forest and island ecosystems to reforming the Kenyan civil service and devising proposals to protect half the planet for nature. Alongside grand accomplishments, which were sometimes controversial, their passing has been a chance to reflect on the small and the mundane: fleeting interactions that inspired careers, kind words that propelled research projects, and generosity of spirit that has helped amplify the voices of those that practise and produce science.

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Revisited: Could bringing back its love song save one of Australia’s rarest songbirds?

It wouldn’t be Guardian Australia ‘best of’ series without a bird episode! The regent honeyeater is an endangered native Australian songbird, with only a few hundred left in the wild. A few years ago scientists noticed something odd – they were mimicking other birds, and unable to sing their own song. Environment reporter Graham Readfearn and Dr Joy Tripovich explain how this species lost its song, and whether teaching it how to sing again could help save it from extinction

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‘Ghost’ orchid that grows in the dark among new plant finds

Hundreds of new species include pink voodoo lily and an ylang-ylang tree named after Leonardo DiCaprio

A ghost orchid that grows in complete darkness, an insect-trapping tobacco plant and an “exploding firework” flower are among the new species named by scientists in the last year. The species range from a voodoo lily from Cameroon to a rare tooth fungus unearthed near London, UK.

A new tree from the ylang-ylang family is the first to be named in 2022 and is being named after the actor and environmentalist Leonardo DiCaprio. He campaigned to revoke a logging concession which threatened the African tree, which features glossy yellow flowers on its trunk.

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Rocky road: Paraguay’s new Chaco highway threatens rare forest and last of the Ayoreo people

Forced from their homes by missionaries, the Ayoreo cling on in the Chaco. Now the Bioceanic Corridor cuts through the fastest-vanishing forest on Earth, refuge of some of the Americas’ last hunter-gatherers

In 1972, Catholic missionaries entered the Chaco forest of northern Paraguay and forced Oscar Pisoraja’s family, and their nomadic Ayoreo people, to leave with them. Many perished from thirst on the long march south. Settled near the village of Carmelo Peralta on the Paraguay River, dozens more died from illnesses. Still, the survivors kept up some traditions – hunting for armadillos; weaving satchels from the spiky caraguatá plant. “We felt part of this place,” says Pisoraja, now 51.

Today, his community – and other indigenous peoples across the Chaco, a tapestry of swamp, savanna and thorny forest across four countries that is South America’s largest ecosystem after the Amazon – are confronting a dramatic new change.

Mario Abdo Benítez, Paraguay’s president, and Reinaldo Azambuja Silva, governor of Mato Grosso do Sul state in Brazil, at the site of a new bridge across the Paraguay River, due to be completed in 2024

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Bear caught on camera stealing kill from wolves in Yellowstone park – video

Wildlife officials in Yellowstone national park captured the unusual sight of a cheeky grizzly bear tagging along with a pack of hunting wolves, then making off with their kill.

The enthralling video, posted to the National Parks Service Facebook page, shows the October incident in which the wolves from the Junction Butte pack in northern Yellowstone were joined by a lumbering grizzly as they hunted a herd of elk

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‘We can transition to a better country’: a trans Colombian on diversity in ecology and society

Brigitte Baptiste has a high profile as a transgender Colombian woman and an ecologist – in a country where both are targeted

When Brigitte Baptiste walks on to the 10th floor of Bogotá’s Ean University at 9.45am in a plunging dress, knee-high cheetah-print boots and a silvery wig, the office comes to life. She examines some flowers sent by the Colombian radio station Caracol to thank her for taking part in a forum, her co-worker compliments her on her lipstick, and she settles in for a day of back-to-back meetings, followed by a private virtual conversation with the UN secretary general, António Guterres. Later that evening, she flies to Cartagena for a conference on natural gas.

The 58-year-old ecologist is one of Colombia’s foremost environmental experts, and one of its most visible transgender people, challenging scientific and social conventions alike. An ecology professor at the Jesuit-run Javeriana University for 20 years, she has written 15 books, countless newspaper columns, and won international prizes for her work. Most recently, she was appointed chancellor of Ean University, a business school, as part of its push for greater sustainability.

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Fossil hunter Richard Leakey who showed humans evolved in Africa dies at 77

Kenyan conservationist found oldest near-complete human skeleton in 1984, dating from 1.5m years ago

The celebrated Kenyan conservationist and fossil hunter Richard Leakey, whose groundbreaking discoveries helped prove that humankind evolved in Africa, has died aged 77.

The president of Kenya, Uhuru Kenyatta, announced Leakey’s death with “deep sorrow”.

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‘We’ll get it done. Come hell, high water or Covid’: Can 2022 be a super year for nature?

Biodiversity talks in Kunming are likely to be delayed again, but the world urgently needs a Paris-style agreement for nature

It was supposed to be a “super year for nature”: 2020 was going to be “a major opportunity to bring nature back from the brink”. But then the coronavirus pandemic set in and long-held plans to tackle the environmental crisis, kickstarted at Davos in January, where the financial elite underscored the risks of global heating and biodiversity loss to human civilisation, never happened. The biggest biodiversity summit in a decade, Cop15 in Kunming, China, where world leaders were expected to strike a deal to halt and reverse the destruction of ecosystems by reaching a Paris-style agreement for nature was postponed until 2021. The Cop26 climate summit was also postponed for a year.

As we enter 2022, there has still not been a super year for nature. Substantive negotiations for the biodiversity Cop15 meeting in China, the little sister to the climate convention, are likely to be delayed a fourth time as a result of the Omicron variant. Preparatory talks planned for January 2022 in Geneva have been pushed back – again – until March in a process that is feeling increasingly cursed, despite the best efforts of organisers.

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UK zoo helps lost Mexican fish live to see another Tequila sunrise

Declared extinct in the wild in 2003, species has been reintroduced to its native river after being bred in Chester

A “charismatic little fish” declared extinct in the wild has been reintroduced to its native Mexico after being bred in an aquarium at Chester zoo.

The tequila fish (Zoogoneticus tequila), which grows to no bigger than 70mm long, disappeared from the wild in 2003 owing to the introduction of invasive, exotic fish species and water pollution.

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Plastic beads could make nets more visible to cetaceans, scientists say

Beads add hardly any extra weight to fishing gear and could save thousands of lives, it is claimed

Simple plastic beads could save the lives of some of the thousands of porpoises and other cetaceans that get caught in fishing nets each year, scientists say.

Harbour porpoises use echolocation to find their prey and for orientation. However, their acoustic signals cannot pick up the mesh of a gillnet, and as a result they often become trapped.

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Japan’s whaling town struggles to keep 400 years of tradition alive

The resumption of killing whales for profit for the first time in over 30 years is offering little cause for celebration

You don’t have to look far to find evidence of Wada’s centuries-old connection to whaling. Visitors to the town on Japan’s Pacific coast are greeted by a replica skeleton of a blue whale before entering a museum devoted to the behemoths of the ocean.

At a local restaurant, diners eat deep-fried whale cutlet and buy cetacean-themed gifts at a neighbouring gift shop. At the edge of the water stands a wooden deck where harpooned whales are butchered before being sold to wholesalers and restaurants.

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A seed for all seasons: can ancient methods future-proof food security in the Andes?

In Peru’s remote villages, farmers have used diverse crops to survive unpredictable weather for millennia. Now they are using this knowledge to adapt to the climate crisis

In a pastoral scene that has changed little in centuries, farmers wearing red woollen ponchos gather on a December morning in a semicircle to drink chicha, made from fermented maize, and mutter an invocation to Pachamama – Mother Earth before sprinkling the dregs on the Andean soil.

Singing in Quechua, the language spread along the vast length of the Andes by the Incas, they hill the soil around plants in the numerous small plots terraced into a patchwork up and down the Peruvian mountainside.

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‘The fight goes on’: the struggle to save Europe’s songbirds

Campaigners help close the loophole allowing glue-trapping in France, but the battle to save endangered bird species goes on

Chasse à la glu has ended, but the fight to save other birds is not over,” says campaigner Yves Verilhac. “We are now battling to stop other cruel hunting methods that lead to the killing of skylarks, lapwings, golden plovers, thrushes and blackbirds.”

Two years ago, Verilhac, of France’s Ligue pour la Protection des Oiseaux (LPO), was fighting to stop the French tradition of chasse à la glu hunting songbirds with twigs and branches covered in adhesive.

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Deforestation making outdoor work unsafe for millions, says study

Rise in temperatures and humidity linked to forest loss has reduced safe hours for working in the tropics

Deforestation has made outdoor work unsafe for millions of people in the tropics over the past 15 years, a study has found.

The rise in temperatures and humidity caused by tree loss has reduced the number of safe hours in the day for people to work, especially for those performing heavy labour.

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