Younger people invited to get jab at more than 1,600 sites across country
The Covid-19 vaccine rollout has been extended in England for the second time in two days. Adults aged 42 and over are now able to book their jab.
Here are your questions answered as the NHS in England takes another step forward in the biggest vaccination programme in its history.
Continue reading...Door-to-door initiative targeting elderly people reluctant to have jab to be rolled out after local success
A coronavirus “vaccination persuasion” initiative targeting elderly people who have declined invitations to get vaccinated is gearing up to be rolled out across Turkey after proving a resounding success in a district in the country’s south-east.
Since February, doctors and healthcare workers in the mainly Kurdish city of Adıyaman, or Semsûr, have been calling people in age groups already eligible for the vaccine to ask why they have not come to clinics for appointments.
Continue reading...Analysis: experts believe a number of things coalesced to cause the world’s worst coronavirus outbreak
India is now identifying more than 1 million coronavirus cases every three days, with many times more thought to be going unregistered in a vast country where public health surveillance is often poor. Daily deaths exceeded 2,800 on Sunday, but these too are thought to be many times higher.
Epidemiologists and other experts are speculating that several factors have coalesced over the past months to bring India to the point of the world’s worst Covid-19 outbreak.
Continue reading...Suzanne Simard revolutionised the way we think about plants and fungi with the discovery of the woodwide web. The ecologist’s new book shares the wisdom of a life of listening to the forest
When Suzanne Simard made her extraordinary discovery – that trees could communicate and cooperate through subterranean networks of fungi – the scientific establishment underreacted. Even though her doctoral research was published in the Nature journal in 1997 – a coup for any scientist – the finding that trees are more altruistic than competitive was dismissed by many as if it were the delusion of an anthropomorphising hippy.
Today, at 60, she is professor of forest ecology at the University of British Columbia and her research of more than three decades as a “forest detective” is recognised worldwide. In her new book, Finding the Mother Tree – a scientific memoir as gripping as any HBO drama series – she wants it understood that her work has been no brief encounter: “I want people to know that what I’ve discovered has been about my whole life.” Her moment has come: research into forest ecosystems and mycorrhizal networks (those built of connections between plants and fungi) is now mainstream and there is a hunger for books related to the subject: Peter Wohlleben’s The Hidden Life of Trees and Merlin Sheldrake’s Entangled Life – about the hidden life of fungi – extend her thinking about the “woodwide web”, while the heroine of Richard Powers’s Pulitzer prize-winning 2018 novel The Overstory is said to have been inspired by Simard.
Continue reading...Scientists in Exeter are identifying Covid through human faeces – this could be be expanded to monitor other diseases
They call themselves the “poo crew” – a team of health detectives who are tracking down and heading off Covid outbreaks by reading the signs in our sewage. And they are expanding. Earlier this month, the Environmental Monitoring for Health Protection Programme opened a purpose-built laboratory on the fringes of Exeter, its sterile interior in stark contrast to the unsanitary subject of its investigations.
The opening of the laboratory marks a dramatic expansion of what was, until less than a year ago, just a soil pipe dream: testing sewage for coronavirus to understand where it is circulating and get an early warning of future potential spikes in infection. In the future, this network could be expanded to monitor other infectious diseases including flu.
Continue reading...Native species have been revered, feared, hunted and tamed. Now experts hope revulsion can give way to fascination
For many years, the top-rated attraction in the Tasman district of New Zealand was a cafe famed for its rural setting, seafood chowder – and tame eels.
For a few dollars you could buy a pottle of mince and a wooden stick to take down to the stream, where a blue-black mass was shining, writhing, waiting.
Continue reading...Study was one of the first to evaluate alterations in human mutation rates in response to manmade disaster
For decades popular culture has portrayed babies born to the survivors of nuclear accidents as mutants with additional heads or at high risk of cancers. But now a study of children whose parents were exposed to radiation from the Chernobyl disaster in 1986 suggests they carry no more DNA mutations than children born to any other parents.
The study, published in Science, is one of the first to systematically evaluate alterations in human mutation rates in response to a manmade disaster, such as accidental radiation exposure.
Continue reading...Experts calculate the total number of the dinosaurs that lived over 127,000 generations
One Tyrannosaurus rex seems scary enough. Now picture 2.5 billion of them. That’s how many of the fierce dinosaur king probably roamed Earth over the course of a couple of million years, a new study finds.
Using calculations based on body size, sexual maturity and the creatures’ energy needs, a team at the University of California, Berkeley, figured out just how many T rex lived over 127,000 generations, according to a study in the journal Science on Thursday. It’s a first-of-its-kind number, but just an estimate with a margin of error that is the size of a T rex.
Continue reading...Scientists confirm they have produced ‘chimera’ embryos from long-tailed macaques and humans
Monkey embryos containing human cells have been produced in a laboratory, a study has confirmed, spurring fresh debate into the ethics of such experiments.
The embryos are known as chimeras, organisms whose cells come from two or more “individuals”, and in this case, different species: a long-tailed macaque and a human.
Continue reading...What threat does variant that is causing devastation in Brazil pose, and how is it different?
The P1 variant is causing devastation in Brazil, where an uncontrolled Covid pandemic is raging. P1, behind the terrible scenes of hospital overload in Manaus with patients’ relatives pleading for oxygen cylinders, is now the dominant form of coronavirus in many of Brazil’s cities and partly responsible for the high death toll. Other Latin American countries have closed their borders and restricted travel to and from Brazil but P1 is now in at least 15 countries in the Americas, according to the Pan American Health Organization (PAHO).
Continue reading...Genetic sequencing dating back 45,000 years shows intermixing with Neanderthals more common than previously thought
Genetic sequencing of human remains dating back 45,000 years has revealed a previously unknown migration into Europe and showed intermixing with Neanderthals in that period was more common than previously thought.
The research is based on analysis of several ancient human remains – including a whole tooth and bone fragments – found in a cave in Bulgaria last year.
Continue reading...Research into how some HIV-positive people keep the virus at bay promises to yield new treatment possibilities, from vaccines to gene therapies
The year was 1998 when Joel Blankson encountered a patient he would never forget. Blankson was working in the HIV clinic at John Hopkins School of Medicine, Baltimore, when an HIV-positive woman in her mid-40s arrived for some routine tests.
Blankson gave her a PCR test, intending to prescribe a newly developed combination of medicines called antiretroviral therapies to suppress the infection, and prevent her developing Aids.
Continue reading...Country has registered more than 12.9 million cases; 10,000 appointments scrapped, reports Dutch news agency citing Netherlands health ministry
That’s it from the global blog team for now. Thanks for following our coverage, a new blog will be going live in a few hours.
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To mark National Puppy Day, Elizabeth Lo’s acclaimed film Stray gives humans rare insight into the canine gaze, courtesy of homeless mutts in Istanbul
From the moment Zeytin makes her first appearance in Elizabeth Lo’s feature Stray, there is no doubt you are in the presence of a unique spirit. As she surveys an Istanbul side street at dawn, her features are alert, her gaze is uncompromising and her deep, dark eyes sparkle with intelligence. There’s something of Katharine Hepburn in The African Queen about her, or maybe Brad Pitt in one of his less kempt moments. But non-dog comparisons don’t do her justice. This is one indomitable bitch.
Lo first encountered Zeytin and her friend Nazar on a 2017 casting trip to Turkey, and knew immediately that she had found the star she was looking for – which is to say, a dog who could carry a human film. “We were wandering through a busy underground tunnel filled with people when suddenly these two giant stray dogs streaked past us,” she says. “They were running with such a sense of purpose and it was so intriguing. What appointments did these dogs have to keep?”
Continue reading...On 23 March 2020, the UK prime minister, Boris Johnson, announced the first lockdown in response to the growing number of cases of Covid-19. At the same time, countries around the world began to close their schools, restaurants, and offices and ask citizens to physically distance from one another. In the 12 months since, more than 2 million people have died, viral variants have emerged, and we have developed safe and effective vaccines.
One year into the pandemic, Science Weekly is asking: what happens next? Ian Sample talks to the professors Martin Landray, Mike Tildesley, and Deborah Dunn-Walters about Covid treatments, vaccines and what the next 12 months may hold
Continue reading...Analysis: as lockdown restrictions ease, the country now faces a race between vaccination and infection
Britain’s latest lockdown has dramatically reduced cases of coronavirus, and the number of people being admitted to hospital and dying from the disease. What the country faces now is essentially a race between vaccination and infection: can we protect people faster than the virus spreads as restrictions are eased?
This was always going to be a balancing act. The UK vaccination strategy of prioritising the most vulnerable people and moving down the age groups is intended to save lives first and slow transmission second. This means that as the country unlocks, infections are likely to rise, primarily in younger people who have more social contacts and have not yet been vaccinated. Hospitalisations and deaths are expected to rise too, though not as sharply: even though vaccine coverage has been high in vulnerable groups and older people, not everyone has the vaccine and it will not protect all those who do.
Continue reading...The microscopic animals can withstand extreme conditions that would kill humans, and may one day help in the development of Covid vaccines. How do they do it?
On 11 April 2019, a spacecraft crashed on to the Moon. The Israeli Beresheet probe was supposed to land gently in the Mare Serenitatis, a huge plain of basalt rock formed in a volcanic eruption billions of years ago. It would have been the first privately funded mission to land on the Moon. But owing to a last-minute instrument failure Beresheet did not slow down enough and slammed into the surface at 500 kilometres per hour.
From the Moon’s point of view, this was a failed alien invasion. Beresheet was carrying animals called tardigrades, which look like stunted, microscopic caterpillars. They may not seem like an obvious candidate for interplanetary travel, but tardigrades are famed among biologists for their ability to survive conditions that would kill almost any other animal. It is possible that some of them survived the crash.
Continue reading...Cultured stem cells turn into blastoid ‘balls’, like natural blastocysts after egg fertilisation
Scientists have made clumps of human tissue that behave like early-stage embryos, a feat that promises to transform research into the first tentative steps of human development.
The clumps of cells, named blastoids, are less than a millimetre across and resemble structures called blastocysts, which form within a few days of an egg being fertilised. Typically blastocysts contain about 100 cells, which give rise to every tissue in the body.
Continue reading...Move raises questions as China’s vaccines not approved in many countries to which it is opening travel
China is resuming visa processing for foreigners from dozens of countries, but only if they have been inoculated against Covid-19 with a Chinese-made vaccine.
The move has raised questions about the motivations behind the demand, given China’s vaccines are not approved in many of the countries to which it has opened travel and that it will not accept foreign vaccines made elsewhere, including those approved by the World Health Organization.
Continue reading...Creation of mini-organs using stem cells will help research into tear-related disorders
Stop your sobbing – because scientists can do it for you. Using stem cells, Dutch researchers have grown miniature human tear glands capable of “crying”.
Initially, when scientists were looking at developing this technology, their first port of call was the inner lining of the gut, because it replaces itself every five days. They took a tiny piece of gut tissue filled with stem cells and fed it proteins called growth factors to stimulate cell growth, expecting the stem cells to rapidly proliferate.
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