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There’s increasing scientific consensus that melting arctic ice, caused by human pollution, is flooding the North Atlantic with millions of tons of freshwater which appears to interfere with the AMOC current - a vital system which circulates sea water across parts of the world.

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The “scientific consensus” talking point was succinctly dismantled by Dr. Judith Curry in her interview with John Stossel back in October. 𝗝𝗼𝗵𝗻 𝗦𝘁𝗼𝘀𝘀𝗲𝗹: “The overwhelming scientific consensus. That’s what people still believe.” 𝗗𝗿. 𝗝𝘂𝗱𝗶𝘁𝗵 𝗖𝘂𝗿𝗿𝘆: “. . . when you talk about ‘scientific consensus,’ like the Earth orbits the sun, you don’t need to say ‘There’s a consensus that the Earth orbits the sun,’ it’s a well-known fact. When you’re talking about consensus, it’s usually on a topic where there is disagreement, and a government has asked a group to come to some sort of an agreement on what’s what. You see it in science, you see it in. . . medical boards. . . So, it’s a manufactured consensus. It’s a consensus of scientists, which is different than a scientific consensus. . .” Dr. Curry goes on to explain that there is no consensus on the most contentious issues of climate change, such as extent of human contribution and the impacts. 𝗗𝗿. 𝗝𝘂𝗱𝗶𝘁𝗵 𝗖𝘂𝗿𝗿𝘆: “. . . there’s a true scientific consensus on very little of this, you know that, • The temperatures have been increasing for over a hundred years. • That burning of fossil fuels emits CO₂ into the atmosphere. • And, CO₂ has a radiation spectrum that sort of keeps the Earth’s surface warm, all other things being equal. Beyond that, there’s no real big consensus on anything. The most consequential issues we don’t have a consensus on: • How much of the recent warming is caused by fossil fuels? We still don’t know. • Is fossil fuel and is warming dangerous? This is the weakest part of the argument. There’s no agreement as to whether warming is dangerous.” 🔗 You can watch the full 40+ minute interview here:
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The “scientific consensus” talking point was succinctly dismantled by Dr. Judith Curry in her interview with John Stossel back in October. 𝗝𝗼𝗵𝗻 𝗦𝘁𝗼𝘀𝘀𝗲𝗹: “The overwhelming scientific consensus. That’s what people still believe.” 𝗗𝗿. 𝗝𝘂𝗱𝗶𝘁𝗵 𝗖𝘂𝗿𝗿𝘆: “. . . when you talk about ‘scientific consensus,’ like the Earth orbits the sun, you don’t need to say ‘There’s a consensus that the Earth orbits the sun,’ it’s a well-known fact. When you’re talking about consensus, it’s usually on a topic where there is disagreement, and a government has asked a group to come to some sort of an agreement on what’s what. You see it in science, you see it in. . . medical boards. . . So, it’s a manufactured consensus. It’s a consensus of scientists, which is different than a scientific consensus. . .” Dr. Curry goes on to explain that there is no consensus on the most contentious issues of climate change, such as extent of human contribution and the impacts. 𝗗𝗿. 𝗝𝘂𝗱𝗶𝘁𝗵 𝗖𝘂𝗿𝗿𝘆: “. . . there’s a true scientific consensus on very little of this, you know that, • The temperatures have been increasing for over a hundred years. • That burning of fossil fuels emits CO₂ into the atmosphere. • And, CO₂ has a radiation spectrum that sort of keeps the Earth’s surface warm, all other things being equal. Beyond that, there’s no real big consensus on anything. The most consequential issues we don’t have a consensus on: • How much of the recent warming is caused by fossil fuels? We still don’t know. • Is fossil fuel and is warming dangerous? This is the weakest part of the argument. There’s no agreement as to whether warming is dangerous.” 🔗 You can watch the full 40+ minute interview here:

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A new study by van Westen et al. shows that the #tippingpoint of the Atlantic overturning circulation #AMOC is also found in a high-resolution ocean model which resolves ocean eddies. A first, but no surprise to AMOC experts. 🧵
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A new study by van Westen et al. shows that the #tippingpoint of the Atlantic overturning circulation #AMOC is also found in a high-resolution ocean model which resolves ocean eddies. A first, but no surprise to AMOC experts. 🧵

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The ice in the Arctic and Antarctica plays critical roles in maintaining life on Earth. They are the biggest reservoirs of freshwater on the planet and help steer ocean currents, which are major drivers of our weather. But if enough of that ice melts, sea levels could rise all over the world. That’s why a team of scientists is studying the Thwaites Glacier, nicknamed the "Doomsday Glacier," which is roughly the size of Florida and melting fast. PBS News Hour’s science correspondent Miles O’Brien joined Horizons host William Brangham from the western coast of Antarctica, where he is aboard a scientific expedition to report on the glacier. "Let’s remember the glacier’s not the villain," O’Brien told Brangham. "Human beings are the villain that are making the ice melt." O'Brien noted that Thwaites itself "contains enough, if melted, enough water to raise sea level, the world over, 2.5 feet." But the glacier also buttresses two other ice shelves. "If it starts this cascade of melt and collapse, there would be very little to stop it from causing about 10 feet of sea level rise all over the world," he said. Horizons from PBS News, dives into the science, health, technology and environmental issues making headlines each week. Visit the PBS News website to watch this week's episode.
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