environment
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Judge rejects Standing Rock request to block Dakota Access pipeline drillingTribes lost a challenge of the president’s decision to speed approvals for the last stretch of the $3.7bn pipeline under the Missouri river in North Dakota -
Lake Oroville dam: emergency staff race to fix spillway before more rain strikesBags of rocks loaded on to helicopters to fill gap created by erosion, and the emergency repairs come a day after nearly 200,000 were evacuated in California
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Environmentalists warn of bumblebee's extinction after Trump halts regulationsOrder for 60-day pause on regulations not yet implemented includes protection for endangered rusty patched bumblebee, which experts say is near extinction -
Last stand: 'water protectors' return to Standing Rock as drilling set to beginWhile tribal leaders have urged activists to let the fight play out in the courts, many on the ground have called for a final push as pipeline moves ahead -
Final phase of Dakota Access pipeline to be approved, a major blow to Standing Rock SiouxThe army corps of engineers says it intends to grant a permit for the oil pipeline to cross the Missouri river, following Donald Trump’s executive order
energy
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Toshiba to confirm cessation of new nuclear projects outside JapanIn a blow to plans for a new UK power station, the Japanese firm’s expected announcement comes after review of overseas investments
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Could these five innovations help solve the global water crisis?A number of creative technologies aim to increase access to clean water in developing countries. We asked two experts to assess some of them
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latest news
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'Extraordinary' levels of pollutants found in 10km deep Mariana trenchPresence of manmade chemicals in most remote place on planet shows nowhere is safe from human impact, say scientists
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One day in the life of a suffocating planet: air pollution around the worldAs Guardian Cities kicks off a week investigating air pollution, our correspondents report from the front lines of this global urban crisis
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Canada reintroduces bison to Banff national park after more than a centuryHelicopters transport 16 of the large mammals to site in Alberta as scheme restores once-dominant grazers to ecosystem
elephant conservation
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'What can I do to help elephants?'Climate change, poaching, competition for food and water… elephants have never faced such threats. Here are more than 50 ways to give them a helping hand. Can you add to the list?
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Elephants in crisis: MPs accuse government and Europe of dragging their feet over ivory ban‘This is the last chance saloon,’ say politicians and campaigners pushing for urgent action
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Live Q&A: What can we do to help elephants?Volunteer? Raise money? Be a citizen scientist? Join us Monday 13 Feb at 1 - 2.30pm GMT to talk about what we can all do to help elephants.
featured series
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The new bottom lineThe new bottom lineMicrofibers are polluting our food chain. This laundry bag can stop thatTwo German inventors created a laundry bag to prevent shedding microfibers ending up in oceans. Now, Patagonia will start selling it to customers
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An apple a dayAn apple a dayMorning Routines – the making of long-distance runner Scott Jurek – videoWhat ingredients are required to make an ultramarathon runner? In Boulder, Colorado, Scott Jurek has concocted quite the recipe that has kept him going the distance for the past two decades
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the big picture
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The week in wildlife – in picturesA tiger family drinking at the watering hole, a nightingale and a snake that plays dead are among this week’s pick of images from the natural world
Republican elders call for new national carbon tax to replace federal regulations