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30,196 articles from Guardian Unlimited Science

What kind of face mask gives the best protection against Covid-19?

Your questions answered on what type of mask to wear to cut the risk of getting Covid-19Coronavirus – latest updatesSee all our coronavirus coverageYes. Different types of mask offer different levels of protection. Surgical grade N95 respirators offer the highest level of protection against Covid-19 infection, followed by surgical grade masks. However, these masks are costly, in limited supply,...

Coronavirus live news: India sees record new cases as Texas warns of overwhelmed hospitals

Iran sees highest daily deaths; UK government injects £1.57bn into arts and heritage; Spain puts part of Galicia back into lockdown. Follow the latest updatesIndia confirms record new casesTexas mayors warn of ‘serious trouble’ as cases surge across USGlobal report: second local lockdown in Spain; second wave in IsraelSee all our coronavirus coverage 1.22am BST In Australia, the ABC is...

Woman whose NHS cancer trial was halted seeks to buy drug privately

Psychologist was due to get life-saving NHS cancer treatment until coronavirus struck Coronavirus – latest updatesSee all our coronavirus coverageA psychologist denied access to a potentially life-saving cancer drug trial because NHS services were suspended due to Covid-19 is trying to raise £240,000 to buy the medicine privately.Wendy Peake said it was “shocking, absolutely shocking” that...


SUNDAY 5. JULY 2020


Starwatch: Venus catches the eye in the head of the Bull

Venus is back in our sky before the sun rises, and will rise earlier as July progressesVenus has returned to the sky. Following its passage between Earth and the sun on 3 June, it can now be seen in the pre-dawn sky. The planet is bright and unmistakable lying in the eastern sky. It is currently located in the constellation of Taurus, the Bull, directly in the group of stars that marks its head....

It is time we made masks compulsory | Letters

Countries where face mask use is widespread have seen fewer Covid-19 deaths, writes Prof David Smith, while Philip Rundall thinks shops should do more to encourage customers to wear themYour comment (Editorial, 2 July) that disparagement of face masks might have come at a cost is well illustrated by comparing different countries. In Hong Kong (population 7.45 million), a survey in March found that...

Met police urged to investigate Dominic Cummings' trip during Covid-19 lockdown

Exclusive: ex-chief prosecutor’s lawyers say behaviour of Boris Johnson’s adviser warrants ‘thorough investigation’The Metropolitan police have been urged to launch an immediate investigation into Dominic Cummings’ trip from London to Durham at the height of the coronavirus outbreak by the former chief prosecutor for north-west England.Lawyers for Nazir Afzal have written to the Met...

WHO underplaying risk of airborne spread of Covid-19, say scientists

Open letter says there is emerging evidence of potential for aerosol transmissionCoronavirus – latest updatesSee all our coronavirus coverageThe potential for Covid-19 to spread through airborne transmission by lingering in the air is being underplayed by the World Health Organization, a group of scientists have said.In an open letter due to be published this week, 239 scientists from 32...

Fears of widespread disorder unfounded as English pubs reopen

Relief as concerns about overwhelmed emergency services fail to materialiseCoronavirus – latest updatesSee all our coronavirus coverageFears that emergency services would be overwhelmed after pubs and restaurants reopened in England have not materialised, according to initial reports.Ahead of pubs opening for the first time since 23 March, NHS England told hospitals and ambulance services that...

I've spent years taming the OCD monster. Coronavirus has ruined everything

I’d come to think of myself as a sad wizard, burdened with rituals to prevent catastrophes. Then the pandemic made those threats realFor many of us, coronavirus has inspired a bit of a germ obsession. We wash our hands until they’re chapped. We see other people as potential vectors. We wipe down our groceries with Lysol, apparently having decided that, if it comes to it, we’d rather die of...

Former WHO director Anthony Costello: 'Opening pubs before schools says something about our priorities'

The paediatrician and member of Independent Sage on Matt Hancock, the likelihood of a vaccine and why 50,000 deaths were preventableAnthony Costello is a paediatrician and international expert on child health who has been an outspoken critic of the British government’s response to Covid-19. He is a member of Independent Sage, a group of experts set up to provide “robust, independent advice”...

What kind of face mask gives the best protection against Covid-19?

Your questions answered on what type of mask to wear to cut the risk of getting Covid-19Coronavirus – latest updatesSee all our coronavirus coverageYes. Different types of mask offer different levels of protection. Surgical grade N95 respirators offer the highest level of protection against Covid-19 infection, followed by surgical grade masks. However, these masks are costly, in limited supply,...

Risks, R numbers and raw data: how to interpret coronavirus statistics

Covid-related facts and definitions are confusing, and as lockdown is eased, clarity is more important than ever Coronavirus – latest updatesSee all our coronavirus coverageWe’re finally over the first peak of the epidemic, but the numbers relating to the virus keep on spreading. Sometimes, however, things get lost in translation from the spreadsheet to the article, broadcast or tweet....

‘It's a tsunami’: Covid-19 plunges Latin America back into poverty and violence

Years of social progress have been reversed by the virus, amid accusations that politicians have been fatally ineptCoronavirus – latest updatesSee all our coronavirus coverageAs coronavirus galloped through Latin America in late April, the mayor of Manaus was in despair. “The outlook is dismal,” Arthur Virgílio admitted as gravediggers in the Amazon’s largest city piled coffins into muddy...


SATURDAY 4. JULY 2020


Stop making sense: why it's time to get emotional about climate change | Rebecca Huntley

The science has been settled to the highest degree, so now the key to progress is understanding our psychological reactionsIt took me much longer than it should have to realise that educating people about climate change science was not enough. Due perhaps to my personality type (highly rational, don’t talk to me about horoscopes, please) and my background (the well-educated daughter of a high...

WHO says trials show malaria and HIV drugs don't cut Covid-19 hospital deaths

Hydroxychloroquine and lopinavir/ritonavir not found to help patients in hospitalCoronavirus – latest updatesSee all our coronavirus coverageThe World Health Organization (WHO) said on Saturday that it was discontinuing its trials of the malaria drug hydroxychloroquine and combination HIV drug lopinavir/ritonavir for patients in hospital with Covid-19 after they failed to reduce mortality.The...

London hospital starts virtual ward rounds for medical students

Imperial College doctors with AR glasses examine patients as trainees watch remotelyCoronavirus – latest updatesSee all our coronavirus coverageA flock of students stumbling after a consultant on a ward round has long been a familiar sight in hospitals. Perhaps not for much longer though – a university has pioneered the use of augmented reality to allow students to take part from home.Imperial...

Does the key to anti-ageing lie in our bones?

Osteocalcin, a hormone produced in the bones, could one day provide treatments for age-related issues such as muscle and memory lossGérard Karsenty was a young scientist trying to make a name for himself in the early 1990s when he first stumbled upon a finding that would go on to transform our understanding of bone, and the role it plays in our body.Karsenty had become interested in osteocalcin,...

Having anxiety and agoraphobia holds you back. But there are positives to be found…

If I hadn’t experienced anxiety and agoraphobia and the therapy that resulted from them, I wouldn’t now understand human complexities as I do, writes Charlotte LevinI sometimes wonder about my parallel life: the one in which I attended drama school, became a respected actor, travelled the world and ended up marrying Louis Theroux after meeting him at an awards ceremony. The life in which I...

Trump is scooping up the world’s remdesivir. It’s a sign of things to come | Devi Sridhar

The case of the Covid-19 drug shows how national interests will continue to define the allocation of research productsCoronavirus – latest updatesSee all our coronavirus coverageDonald Trump has called Covid-19 a hoax, encouraged his followers to take hydroxychloroquine and threatened to cut all ties between the US and the World Health Organization. He has predicted that coronavirus will...

‘It’s not over’: intimate diaries from the eye of the UK’s coronavirus storm

From an intensive care nurse to a homeless restaurant worker, four people changed by Covid-19 reflect on the most intense chapter of their livesOn 21 February, McFarlane, 57, was on her way back to Bangkok airport with her husband, Archie. The couple had been visiting their son, who works at an international school. “We felt apprehensive because the virus was starting to hit the news,” she...

Love of science, not Trump's ignorance, will make America great again

Amid a pandemic, the president rails against reason itself. The passions of his predecessors throw his failure into sharp reliefWe know what the temperature was in Philadelphia on 4 July 1776, because Thomas Jefferson wrote it down at 6am (68F), 9am (72.25F), 1pm (76F), and 9pm (73.5F). Even on this most important day, the author of the Declaration of Independence was never too busy to observe...

Coronavirus live news: worldwide cases top 11m as US states hit fresh highs

4 July holiday weekend set to start with continued rise in infections; Brazil cases pass 1.5m; Boris Johnson defends decision to reopen pubs on Saturday. Follow all the developments liveWhat we’re learning about Covid as US states open upHow Victoria’s outbreak divided AustraliaScotland and Wales attack UK government’s shambolic travel changes 12.53am BST New South Wales has quietly added...


FRIDAY 3. JULY 2020


UK buys £400m stake in bankrupt satellite rival to EU Galileo system

Investment with India made in US firm OneWeb after Brexit locks UK out of Europe’s satellite navigation systemThe UK government has pledged to invest $500m (£400m) in bankrupt satellite company OneWeb, giving it a stake in a business that provides broadband from space.The government, which has proven so far unwilling to take stakes in major British companies hit by the coronavirus pandemic,...

Is coronavirus really in retreat in the UK?

Key questions about Covid-19 answered as lockdowns ease across the four nationsCoronavirus – latest updatesSee all our coronavirus coverageEngland is approaching a significant relaxation of lockdown on Saturday, while in Scotland, outdoor cafes and beer gardens will begin to reopen from Monday. But with rises in infection cropping up around the UK is Covid-19 really on the wane? Continue...

What kind of face mask gives the best protection against Covid-19?

Your questions answered on what type of mask to wear to cut the risk of getting or spreading Covid-19Coronavirus – latest updatesSee all our coronavirus coverageYes. Different types of mask offer different levels of protection. Surgical grade N95 respirators offer the highest level of protection against Covid-19 infection, followed by surgical grade masks. However, these masks are costly, in...