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A polar bear has attacked and killed two people in a remote village in western Alaska, according to state troopers.

Alaska State Troopers said they received the report of the attack at 2:30 p.m. Tuesday in Wales, on the western tip of the Seward Peninsula, KTUU reported.

Initial reports indicate that a polar bear had entered the community and had chased multiple residents, troopers wrote. The bear fatally attacked an adult female and juvenile male.”

The bear was shot and killed by a local resident as it attacked the pair, troopers said.

The names of the two people killed were not released. Troopers said they were working to notify family members.

Troopers and the state Department of Fish and Game are planning to travel to Wales once weather allows for it, the dispatch said.

Wales is a small, predominantly Inupiaq town of about 150 people, just over 100 miles northwest of Nome.

Fatal polar bear attacks have been rare in Alaska’s recent history. In 1990, a polar bear killed a man farther north of Wales in the village of Point Lay. Biologists later said the animal showed signs of starvation, the Anchorage Daily News reported.

Alaska scientists at the US Geological Survey in 2019 found changes in sea ice habitat had coincided with evidence that polar bears use of land was increasing and that the chances of a polar bear encounter had increased.

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Politics

No job for Tom Tugendhat in Kemi Badenoch’s shadow cabinet as Chris Philp appointed shadow home secretary

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November 5, 2024

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No job for Tom Tugendhat in Kemi Badenoch's shadow cabinet as Chris Philp appointed shadow home secretary

Tom Tugendhat is not serving in Kemi Badenoch’s shadow cabinet, it has been revealed – as the new Tory leader continued her appointments today.

Former Home Office minister Chris Philp has been awarded the job of shadow home secretary, the last of the key posts to be announced.

A Conservative source told Sky News Mr Tugendhat was offered a job and turned it down.

Unveiling a host of appointments today, Ms Badenoch, who was elected leader of the Conservative Party last weekend, confirmed that Ed Argar would be the shadow health secretary, while James Cartlidge will take on the role of shadow defence secretary.

Politics latest: Government drops plans to ban smoking in pub gardens

Former business minister Kevin Hollinrake will shadow Angela Rayner on the housing brief, while Victoria Atkins will take on the role of shadow environment secretary.

Claire Coutinho, who was the energy secretary under Rishi Sunak, will continue in the opposition version of the role.

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Helen Whately has been appointed shadow work and pensions secretary and Andrew Griffith, the former economic secretary to the Treasury, is the new shadow business and trade secretary.

Ms Badenoch, who became Conservative leader on Saturday, started officially appointing her shadow cabinet on Sunday evening.

Yesterday Dame Priti Patel made a comeback to frontline politics after the new Conservative leader appointed her as shadow foreign secretary.

Former shadow work and pensions secretary Mel Stride, who ran in the Tory leadership race and is considered more of a moderate than Ms Badenoch, was also made shadow chancellor.

The move has been interpreted as Ms Badenoch making an effort to unite the party following its bruising election defeat, which saw it reduced to just 121 seats.

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Badenoch: ‘It is time to renew’

Robert Jenrick, who lost out to Ms Badenoch in the Tory leadership race, is the new shadow justice secretary, while Laura Trott, who previously served as chief secretary to the Treasury, was appointed shadow education secretary.

Now the Conservatives are in opposition, the shadow cabinet’s role is to scrutinise the policies and actions of the government and offer alternative policies.

Other roles that have been confirmed today include Stuart Andrew as shadow culture secretary, Gareth Bacon as shadow transport secretary, Andrew Bowie as shadow Scotland secretary, Alex Burghart as shadow Chancellor of the Duchy of Lancaster and Shadow Secretary of State for Northern Ireland and Mims Davies as shadow Wales secretary and shadow minister for women.

Former transport minister Jesse Norman has been appointed as shadow leader of the Commons while Richard Fuller is the new shadow chief secretary to the Treasury and Alan Mak is the new shadow science secretary.

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During the Conservative Party leadership race, Ms Badenoch suggested that all six MPs who ran against her for the top job – Mr Jenrick, Mr Tugendhat, Mr Stride, Ms Patel and James Cleverly – would be offered a job in her shadow cabinet.

Mr Cleverly, who came third in the leadership race, said on Friday he would not be joining Ms Badenoch’s top team.

It is understood Ms Badenoch will appoint the remainder of the team later in the week and on a rolling basis.

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Science

Geodynamic Model Reveals Erosion Process of North China Craton

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November 5, 2024

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Geodynamic Model Reveals Erosion Process of North China Craton

Researchers at the China University of Geosciences in Beijing, led by Professor Shaofeng Liu, have shed light on the mysterious transformation of the North China Craton (NCC). This research, published in Nature Geoscience, presents a breakthrough model that explains the processes behind the craton’s gradual erosion, which began in the Mesozoic era. Using detailed mantle-flow modelling, Liu’s team has traced how tectonic forces deep within the Earth have destabilised this ancient portion of continental crust, challenging long-held assumptions about craton stability.

Reconstructing Ancient Tectonic Forces

In a recent study published in Nature Geoscience, the model suggests subducted beneath the Eurasian plate where the NCC is located. Unlike typical subduction, this plate didn’t immediately sink into the mantle. Instead, it slid horizontally under the NCC’s crust, weakening its foundation in a process known as flat-slab subduction. Using seismic and stratigraphic data, the team reconstructed this tectonic behaviour, revealing how the unusual movement triggered chemical reactions that steadily eroded the NCC’s once-stable base.

Three Stages of Deformation

The research identifies three key stages in the NCC’s deformation. First, as the Izanagi plate began to subduct, it exerted horizontal pressure that altered the composition of the NCC’s foundation. In the second stage, the plate eventually rolled back, sinking deeper and creating a thinning effect on the lithosphere. This rollback phase also caused surface uplift and the formation of rift basins. The final stage saw the development of a “mantle wedge”—a zone of partially melted material—between the sinking plate and the craton, further eroding the base and promoting volcanic activity.

Implications for Geological Understanding

This study provides a more nuanced view of how tectonic and mantle forces interact to erode stable crustal structures over time. Liu’s model offers insight into the NCC’s transformation and makes our understanding of craton stability better, with practical implications for exploring mineral deposits essential to technology. The research paves the way for future studies on the complex life cycles of Earth’s crustal plates, offering a window into ancient geological processes that shape the modern landscape.

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Science

Researchers Develop Cell-Size Wearable Devices to Restore Neuron Function

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2 hours ago

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November 5, 2024

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Researchers Develop Cell-Size Wearable Devices to Restore Neuron Function

Scientists at the Massachusetts Institute of Technology (MIT) have unveiled groundbreaking cell-wearable devices that could transform the treatment of neurological disorders, including multiple sclerosis (MS). These micro-scale devices, which wrap around individual neurons, mimic the function of natural myelin and restore the electrical signalling disrupted by neurodegenerative diseases. Battery-free and activated by light, the devices offer a new way to monitor and potentially modulate neuron activity within the body.

Synthetic Myelin for Damaged Axons

As per the report by Neuro Science News, these tiny devices are crafted from a soft polymer that rolls and adheres to axons and dendrites when exposed to specific light wavelengths. This unique action allows the device to envelop neuronal structures without damaging delicate cellular components. According to Deblina Sarkar, head of MIT’s Nano-Cybernetic Biotrek Lab, this design is a step towards creating symbiotic neural interfaces that work at a cellular level. “Our technology allows intimate interfaces with neurons, adapting closely to their complex shapes,” Sarkar explains. By wrapping around axons—the neural “wiring” responsible for transmitting electrical impulses—the device can act like synthetic myelin, potentially restoring functions in damaged neurons.

Advances in Microelectronics

To create these wearables, researchers use azobenzene, a light-sensitive material. When exposed to specific light wavelengths, azobenzene films form microtubes that snugly wrap around neuronal structures. Lead author Marta J. I. Airaghi Leccardi, now a Novartis Innovation Fellow, highlights that the team developed a fabrication technique scalable enough to produce thousands of these microdevices without a semiconductor cleanroom. “This advancement means we can potentially produce cell-wearables in large quantities for therapeutic applications,” says Leccardi.

Future Applications and Possibilities

MIT researchers are optimistic about the potential to integrate these devices with advanced sensors, which could open new pathways for non-invasive brain treatments. The devices may one day help clinicians and researchers monitor electrical, optical, and even thermal signals from neurons, offering a deeper understanding of brain function. Flavia Vitale, associate professor at the University of Pennsylvania, called the research “an exciting foundation” for future in vivo applications, where the devices might aid in treating neurodegenerative diseases more effectively.

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