Australia on alert after new Omicron XE Covid variant found in NSW

The combination of BA.2 and BA.1 is thought to be highly contagious and comes as mandatory negative Covid tests for travellers to Australia is scrapped

Health authorities are urging caution after the emergence of a hybrid Omicron variant of Covid-19 in Australia.

The recombinant variant, known as XE, is a combination of BA.2 – “stealth Omicron” – and BA.1 – the original and highly transmissible Omicron variant of the virus.

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‘Extraordinary’: ancient tombs and statues unearthed beneath Notre Dame Cathedral

Archaeological dig also finds body-shaped lead sarcophagus buried at the heart of the fire-ravaged monument

An archaeological dig under Notre Dame Cathedral has uncovered an extraordinary treasure of statues, sculptures, tombs and pieces of an original rood screen dating back to the 13th century.

The find included several ancient tombs from the middle ages and a body-shaped lead sarcophagus buried at the heart of the fire-ravaged monument under the floor of the transept crossing.

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Valneva approved to be UK’s sixth Covid vaccine

Medicines regulator says it is first in world to approve Valneva product

A Covid-19 vaccine developed by the French pharmaceutical company Valneva has been given regulatory approval by the Medicines and Healthcare products Regulatory Agency, bringing the total number of jabs approved for use in the UK to six.

As the Covid pandemic swept the world, scientists began developing vaccines against it, with the Pfizer/BioNTech jab being the first in the UK to be authorised for emergency use by the MHRA in 2020. Since then the MHRA has approved the Moderna, Oxford/AstraZeneca, Janssen and Novavax vaccines, although, according to NHS England, Janssen and Novavax are not currently available.

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iPhone maker Pegatron halts Shanghai production due to Covid lockdown

Operations stopped in Chinese cities of Shanghai and Kunshan as global supply chains feel pinch of Beijing's zero-Covid measures

Key iPhone maker Pegatron has halted operations at two subsidiaries in the Chinese cities of Shanghai and Kunshan, as global supply chains feel the pinch of Beijing’s strict zero-Covid measures.

The business hub of Shanghai has become the heart of China’s biggest Covid-19 outbreak since the virus surfaced more than two years ago.

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Thousands of ventilators pulled as electrical faults put UK patients’ lives at risk

Electrical problem triggers global safety alert on 2,000 Philips machines

Two thousand ventilators being used in UK hospitals are at risk of suddenly shutting down due to electrical faults that have led to a global safety alert.

Hospitals have been ordered to source replacement ventilators after Philips Respironics said its breathing support devices could suddenly stop working, in some cases without activating a warning alarm.

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Scientists make further inroads into reversing ageing process of cells

UK research could lead to development of techniques that will stave off diseases of old age

People could eventually be able to turn the clock back on the cell-ageing process by 30 years, according to researchers who have developed a technique for reprogramming skin cells to behave as if they are much younger.

Research from the Babraham Institute, which is affiliated to the University of Cambridge, could lead to the development of techniques that will stave off the diseases of old age by restoring the function of older cells and reducing their biological age.

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Omicron variant does cause different symptoms from Delta, study finds

Data from UK’s Zoe Covid study confirms reports Omicron patients recover more quickly and are less likely to lose sense of smell or taste

People who have the Omicron Covid variant tend to have symptoms for a shorter period, a lower risk of being admitted to hospital and a different set of symptoms from those who have Delta, research has suggested.

As the highly transmissible Omicron variant shot to dominance towards the end of last year, it emerged that, while it is better at dodging the body’s immune responses than Delta, it also produces less severe disease.

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Ancient cemetery of flying reptiles unearthed in Chile’s Atacama desert

Scientists say remains belong to pterosaurs, who lived alongside dinosaurs more than 100m years ago

Scientists in Chile have unearthed a rare cemetery with well-preserved bones of ancient flying reptiles that roamed the Atacama desert more than 100m years ago.

The remains belong to pterosaurs, scientists determined, flying creatures that lived alongside dinosaurs and had a long wingspan and fed by filtering water through long, thin teeth, similar to flamingos.

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Dr Ashley Bloomfield, who led New Zealand’s pandemic response, resigns

Softly-spoken public servant who became a household name says the role had been challenging and complex

The understated doctor who became an unexpected star of New Zealand’s pandemic has resigned after two years leading the country’s Covid response.

Dr Ashley Bloomfield, New Zealand’s director-general of health announced his resignation on Wednesday, and said that it had been “a huge privilege”.

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Hundreds of thousands of fish dead after NSW floods

Scientists find fish that could normally tolerate low oxygen levels among those killed in Richmond river

Hundreds of thousands of fish have died after recent flooding in northern New South Wales caused “severe deoxygenation” of rivers, with researchers alarmed at discovering carcasses of species that traditionally tolerate lower oxygen levels.

Scientists are still researching the full of extent of the destruction to marine life along the Richmond river, where multiple fish kill events occurred following flooding in late February and early March. The flooding led to a total lack of oxygen in a 60km stretch of the waterway, between Coraki and Ballina on the northern NSW coast.

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112m-year-old dinosaur tracks damaged in Utah by construction machinery

Damage evaluated as minor, but fractures to the rims of several prints cannot be repaired at the Mill Canyon track site

They survived intact for 112m years through scorching summer heat and freezing winters at Utah’s Mill Canyon. But several of the world’s most important and historic dinosaur footprints were damaged beyond repair earlier this year when a construction crew arrived to build a new boardwalk for tourists.

The extent of the harm to the footprints – and those of an ancient crocodile crossing in the canyon near Moab – was detailed in a Bureau of Land Management (BLM) report into the January incident published last week.

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Covid cases rise in Shanghai as millions remain in lockdown

Daily case numbers are some of the largest seen in China since the virus was first detected in Wuhan

Covid-19 cases in China’s largest city of Shanghai have risen again as millions remain isolated at home under a sweeping lockdown.

Health officials on Sunday reported 438 confirmed cases detected over the previous 24 hours, along with 7,788 asymptomatic cases. Both figures were up slightly from the day before.

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Covid lockdown dreams reflected our claustrophobia and lack of control

From the scary to the truly weird, our nights were full of apt visions in the early days of the pandemic, a study at University College London found

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Trapped inside a house, stuck inside a vehicle that wouldn’t move, unable to complete seemingly simple tasks: this was the stuff that dreams were made on during lockdown, according to new research from University College London.

Analysis of more than 850 dreams and nightmares submitted online to the Lockdown Dreams Project between March 2020 and March 2021 shows people often dreamed about having frustrating and restrictive experiences in mundane, everyday settings, like the home, at the height of the pandemic.

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Russia to halt cooperation over International Space Station

Director of space agency Roscosmos says partnership will be restored only when ‘illegal sanctions’ are removed

Russia says it will end cooperation with western countries over the International Space Station until sanctions are lifted.

Russia’s space director said on Saturday that the restoration of normal ties between partners at the ISS and other joint space projects would be possible only once western sanctions against Moscow were lifted.

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‘Magnetic turd’: scientists invent moving slime that could be used in human digestive systems

Researcher who co-created substance says it is not an April fool’s joke and they hope to deploy it like a robot

Scientists have created a moving magnetic slime capable of encircling smaller objects, self-healing and “very large deformation” to squeeze and travel through narrow spaces.

The slime, which is controlled by magnets, is also a good electrical conductor and can be used to interconnect electrodes, its creators say.

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Seabed regulator accused of deciding deep sea’s future ‘behind closed doors’

The ISA, obliged to frame industry rules by 2023, drops reporting service and is accused of lacking transparency in plans for mining
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The UN-affiliated organisation that oversees deep-sea mining, a controversial new industry, has been accused of failings of transparency after an independent body responsible for reporting on negotiations was kicked out.

The International Seabed Authority (ISA) is meeting this week at its council headquarters in Kingston, Jamaica, to develop regulations for the fledgling industry. But it emerged this week that Earth Negotiations Bulletin (ENB), a division of the International Institute for Sustainable Development (IISD), which has covered previous ISA negotiations, had not had its contract renewed.

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Covid lockdown extended in Shanghai as outbreaks put economy on the skids

China’s largest city and financial powerhouse is struggling to cope with the country’s worst outbreak since the start of the pandemic in Wuhan

Shanghai has been plunged into an extended lockdown and some residents face another 10 days of isolation in their homes as China’s strict zero-Covid policy threatens to derail the country’s economy.

The eastern half of China’s biggest city had been due to emerge on Friday from a four-day lockdown aimed at crushing a persistent outbreak of the Omicron variant, but the extension was announced late on Thursday night.

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Hundreds fitted with artificial pancreas in NHS type 1 diabetes trial

Adults and children wear device that monitors glucose level and adjusts amount of insulin delivered

Hundreds of adults and children with type 1 diabetes in England have been fitted with an artificial pancreas that experts say could become the “holy grail” for managing the disease, in a world-first trial on the NHS.

The groundbreaking device uses an algorithm to determine the amount of insulin that should be administered and reads blood sugar levels to keep them steady. The NHS trial has so far found the technology more effective at managing diabetes than current devices and that it requires far less input from patients.

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Failure to consider long Covid impact will hit UK economy, says expert

Dr Nathalie MacDermott says condition has substantial impact on people’s ability to work and costs to government and business

The UK will pay an economic price for failing to consider long Covid when lifting restrictions and recommending vaccinations for children, a doctor has warned.

The decision to drop all Covid rules in England was largely based on whether the NHS could handle the number of sick patients, but far more people are expected to develop long-term medical problems after fighting off the virus.

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