As Hong Kong tightens Covid restrictions again, residents complain of being held ‘hostage’

Large parts of the world are opening up, but Hong Kong is still pursuing ‘dynamic zero’ despite rising cases and a public running out of patience

A viral open letter from a member of Facebook group, HK Moms, marked something of a shift in public opinion. The group is the type not usually preoccupied with the city’s political upheavals, but the letter revealed a limit had been reached.

Addressing Carrie Lam, Hong Kong’s chief executive, it accused the government of holding its citizens hostage with new Covid measures – the toughest restrictions since June 2020.

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Signs of premature ageing found in monkeys after hurricane

Rhesus macaques in Puerto Rico appear to have aged by about two years more than expected

Monkeys that survived a devastating hurricane in Puerto Rico were prematurely aged by the experience, a study has found.

Scientists say the findings suggest that an increase in extreme weather around the world may have negative biological consequences for the humans and animals affected.

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Paralysed man walks again thanks to electrodes in his spine

After a crash, Michel Roccati lost all movement in his legs – but his new implants mean he can now ride a bike

A man who was paralysed in a motorcycle accident in 2017 has regained the ability to walk after doctors implanted electrodes in his spine to reactivate his muscles.

Michel Roccati lost all feeling and movement in his legs after the crash that severed his spinal cord, but can stand and walk with electrical stimulation that is controlled wirelessly from a tablet.

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A new start after 60: ‘I’m one of the world’s worst athletes – but I learned to skate in my 70s’

Richard Epstein, a 78-year-old scientist with stage four prostate cancer, says that skating helps him to embrace uncertainty

The first time Richard Epstein went to his local ice-skating rink in Santa Fe, New Mexico, he was handed a free pair of skates. They had been left behind by a discontented customer. “I do things out of my comfort zone, and good things happen,” he observes.

This wisdom was borne out last December, when Epstein, now 78, skated in his first exhibition. His wife filmed his routine, which he performed with his coach, Teri Moellenberg, then his eldest daughter posted it on Twitter, along with a note that Epstein has stage four prostate cancer. Nearly 3 million people viewed it. Epstein is somewhat baffled by the response, describing himself as “just an old guy going around in circles”.

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Deluge of dog pee and poo harming nature reserves, study suggests

Urine and faeces creating nitrogen and phosphorus levels that would be illegal on farms, scientists calculate

Dog faeces and urine are being deposited in nature reserves in such quantities that it is likely to be damaging wildlife, according to a new study.

The analysis found that the resulting overfertilisation of the ground with nitrogen and phosphorus by footpaths could reach levels that would be illegal on farmland.

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How rock climbing gave me a new perspective on the world – and myself

Spending time high above the ground allowed me a unique view of the land and my relationship with it

Climbing, I once thought, was a very manly activity. A pursuit for macho adventurers on a mission to conquer – conquer the mountain, conquer their fear, conquer themselves. That may be the story for some climbers, but as I found my way into this activity, I came to see that something quite different happens on the rock.

Like wild swimming, rock climbing immerses you within the landscape. On the rock, I am fully present. Eyes pay close attention, scanning the details of the rock, trying to read the passage up the cliff. Ears are alert, tuned in to the sounds of the stone, my partner and the environment. Hands roam across the surface, feeling for features while the whole body works to stay within balance, coordinating itself around the various forms of the cliff. Unlike walking, where I could happily trundle absent-mindedly through the landscape, in climbing, attentive observation is essential.

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Playing with dolls helps children talk about how others feel, says study

Research suggests playing imaginary games can aid development of social skills and empathy

Playing with dolls encourages children to talk more about others’ thoughts and emotions, a study has found.

The research suggests that playing imaginary games with dolls could help children develop social skills, theory of mind and empathy. The neuroscientist who led the work said that the educational value of playing with Lego and construction toys was widely accepted, but the benefits of playing with dolls sometimes appeared to have been overlooked.

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Tracking echidna poo unearths largest ever sightings of elusive species across Australia

Researchers and citizen scientists found the animal to be active in every state and territory, even in densely populated cities

Citizen scientists have helped researchers track Australia’s widespread but elusive echidna population – and their poo – to discover the spiny mammal is more the man about town than realised.

Never before considered an “urban” native like common ringtail possums or brush turkeys, their apparent prolificacy in metropolitan areas suggest echidnas should be taken into consideration when establishing biodiversity policies in cities, researchers say.

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How ‘super-enzymes’ that eat plastics could curb our waste problem

Nudged along by scientists and evolution, micro-organisms that digest plastics have the potential to create an efficient method of recycling

Beaches littered with plastic bottles and wrappers. Marine turtles, their stomachs filled with fragments of plastic. Plastic fishing nets dumped at sea where they can throttle unsuspecting animals. And far out in the Pacific Ocean, an expanse of water more than twice the size of France littered with plastic waste weighing at least 79,000 tonnes.

The plastic pollution problem is distressingly familiar, but many organisations are working to reduce it. Alongside familiar solutions such as recycling, a surprising ally has emerged: micro-organisms. A handful of microbes have evolved the ability to “eat” certain plastics, breaking them down into their component molecules. These tiny organisms could soon play a key role in reducing plastic waste and building a greener economy.

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‘The case for masks became hugely stronger’: scientists admit their Covid mistakes

Being proved wrong lies at the heart of scientific progress. Here, experts reveal what they got wrong during the pandemic

Einstein once observed that “a scientist is a mimosa when he himself has made a mistake, and a roaring lion when he discovers a mistake of others”. Aside from the “he”, the statement accurately sums up the tone of some of the current scientific discourse on Covid-19.

Views on lockdowns, vaccinating children and mask mandates have become increasingly polarised, and social media is unforgiving towards those who voice a change of heart. Yet being proved wrong lies at the heart of scientific progress. In science, an unwillingness to revise your position is normally viewed as an intellectual weakness rather than a sign of moral strength. With this in mind, we asked leading scientists what they got wrong during the pandemic.

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World faces ‘bumpy, difficult’ Covid transition, says senior scientist

‘I just don’t think you wake up on Tuesday and it’s finished,’ says former Sage adviser Sir Jeremy Farrar

Tensions in societies around the world over the current Covid situation are going to be very difficult to handle, one of Britain’s most senior scientific figures has warned.

Sir Jeremy Farrar, the director of the Wellcome Trust, who stepped down as a government scientific adviser in November last year, warned the idea of simply “exiting” a pandemic is not realistic.

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Super corals: the race to save the world’s reefs from the climate crisis – in pictures

Few corals are safe from warming oceans, a new study warns, but studies are finding surprisingly hardy corals, natural sunscreens and how coral ‘IVF’ can regrow reefs

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Are we getting any closer to understanding long Covid?

Extreme fatigue, brain fog, sleep disturbances, chest pain and skin rashes. These are just a few of the on-going symptoms of long Covid, a disorder that can persist for many months after an initial Covid infection. With such a vast range of symptoms, and health organisations stretched to capacity by the acute stage of the disease, long Covid has continued to remain something of a mystery.

But with numerous studies trying to understand what exactly people are suffering from, progress is being made. Ian Sample speaks to Prof Akiko Iwasaki about what we do and don’t know about long Covid, and how the vaccine could reveal clues about what’s behind the disorder

Archive: Channel 4 News, Sky News

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International Space Station will plummet to a watery grave in 2030

Nasa confirmed the ISS will plunge into the Pacific ocean to join other decommissioned space stations, satellites and space debris

The International Space Station (ISS) will continue its operations until 2030 before heading for a watery grave at the most remote point in the Pacific, Nasa confirmed in a new transition plan this week.

More than 30 years after its 1998 launch, the ISS will be “de-orbited” in January 2031, according to the space agency’s budget estimates. Once out of orbit the space station will make a dramatic descent before splash landing in Point Nemo, which is about 2,700km from any land and has become known as the space cemetery, a final resting place for decommissioned space stations, old satellites, and other human space debris.

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First patients of pioneering CAR T-cell therapy ‘cured of cancer’

Cancer-killing cells still present 10 years on, with results suggesting therapy is a cure for certain blood cancers

Two of the first human patients to be treated with a revolutionary therapy that engineers immune cells to target specific types of cancer still possess cancer-killing cells a decade later with no sign of their illness returning.

The finding suggests CAR T-cell therapy constitutes a “cure” for certain blood cancers, although adapting it to treat solid tumours is proving more challenging.

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Exposure to one nasal droplet enough for Covid infection – study

Trial in which volunteers were given dose of virus is first to monitor people during entire course of infection

Exposure to a single nasal droplet is sufficient to become infected with Covid-19, according to a landmark trial in which healthy volunteers were intentionally given a dose of the virus.

The trial, the first to have monitored people during the entire course of infection, also found that people typically develop symptoms very quickly – on average, within two days of encountering the virus – and are most infectious five days into the infection.

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Scientists developing single test to detect risk of four cancers in women

Experts may be able to predict risk of developing ovarian, breast, womb and cervical cancers using cells from routine smear test

Scientists are developing a “revolutionary” test to predict a woman’s risk of four cancers using a single sample collected during cervical screening.

Using cervical cells from a routine smear test, experts may be able to spot ovarian and breast cancer or predict their likelihood of developing, according to two papers published in the journal Nature Communications. Further results are due on the ability of the WID-test – women’s cancer risk identification – to predict womb and cervical cancer, researchers said.

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No 10 set for U-turn over mandatory Covid jabs for NHS staff in England

Minister says lower severity of Omicron variant ‘opens the window for us to look at it’

Downing Street appears likely to drop its policy of dismissing frontline NHS and care staff in England who refuse Covid vaccinations, a minister has strongly indicated, after nursing and care organisations called for this to happen.

A decision would be made “in the course of the next few days”, according to Simon Clarke, the chief secretary to the Treasury. He said the lower severity of the Omicron variant of Covid did “open a space” for the policy to be reversed.

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‘I wanted my art to resonate’: The Zimbabwean sculptor responding to Covid with creativity

When the pandemic hit, David Ngwerume began creating pieces to inspire and raise awareness. Now, one of his pieces will feature in the Beijing biennale

When the pandemic first hit the world, Zimbabwean stone sculptor David Ngwerume took his hammer and chisel and started work on the first of a collection of Covid-inspired pieces.

Almost two years and 14 sculptures later, one has made its way to China after being selected for the ninth Beijing International Art Biennale, an exhibition showcasing work from thousands of artists from more than 100 countries.

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Covid live news: Russia reports record 121,228 new cases; UK to start vaccinating vulnerable children

Russia confirms a record 121,228 new daily cases of the virus; NHS will offer vaccinations to vulnerable children between five and 11

Polling has begun in Portugal in a parliamentary election marred by fears of a low turnout due to record coronavirus infections, Reuters reports.

At the University of Lisbon, staff outnumbered mostly elderly voters, with signs on the walls asking people to wear a mask, observe social distancing and to use their own pen.

I have huge respect for rank-and-file police officers who put their lives on the line to keep us safe.

For them to do their job, the public have to have trust and confidence in them. But the way the Met has handled this, I think, is undermining that.

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