Category Archives: Science

Advice from a country with regular shortages: stop hoarding toilet paper, get ready for boredom | Dan McGarry

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In Vanuatu, where cyclones regularly interrupt trade, we are watching the west’s collective panic with bemusement

I’ve lived in the south Pacific island nation of Vanuatu for 16 years. Tropical weather regularly interrupts trade. Even when they’re hundreds of kilometres away, cyclones wreak havoc on shipping. Isolation and deprivation define our lives. We know better than most how to cope.

So imagine our bemusement when we see ranks of empty shelves in Australia, New Zealand, the UK and the USA, denuded by people who pretty clearly have never dealt with a shortage before.

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What is a pandemic?

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The WHO has declared the Covid-19 outbreak to be a pandemic. But what does that mean?

Declaring a pandemic has nothing to do with changes to the characteristics of a disease, but is instead associated with concerns over its geographic spread. According to the World Health Organization, a pandemic is declared when a new disease for which people do not have immunity spreads around the world beyond expectations.

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Scientists identify rain of molten iron on distant exoplanet

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Conditions on Wasp-76b in Pisces include temperatures of 2,400C and 10,000mph winds

Wasp-76b is what astronomers call an exoplanet, one that orbits a star outside our solar system. Scientists have discovered that the local weather conditions include 2,400C temperatures, winds in excess of 10,000mph and a steady pelting of iron rain.

The observations of the distant planet’s unusually hostile climate are the first results from a new instrument on the Very Large Telescope in Chile, which astronomers say will transform our view of worlds far from beyond our own solar system.

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Coronavirus facts: is there a cure and what is the mortality rate of the virus?

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Covid-19 essential guide: can it be caught on public transport, how is it different from the flu, and how sick will I get?

The Covid-19 virus is a member of the coronavirus family that made the jump from animals to humans late last year. Many of those initially infected either worked or frequently shopped in the Huanan seafood wholesale market in the centre of the Chinese city of Wuhan. Unusually for a virus that has made the jump from one species to another, it appears to transmit effectively in humans – current estimates show that without strong containment measures the average person who catches Covid-19 will pass it on to two others. The virus also appears to have a higher mortality rate than common illnesses such as seasonal flu. The combination of coronavirus’s ability to spread and cause serious illness has prompted many countries, including the UK, to introduce or plan extensive public health measures aimed at containing and limiting the impact of the epidemic.

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Covid-19 outbreak: what do health experts mean by ‘flattening the curve’?

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Public health measures can slow the spread of coronavirus to keep the number infected at any one time at a manageable level

In their response to the coronavirus outbreak, public health experts and government officials have repeatedly referenced the importance of “flattening the curve”. But what does this mean, exactly?

When faced by a threat such as Covid-19, epidemiologists often look for two important numbers: how infectious a disease is, quantified by the number of people infected by each person infected, and the total number of people who die as a result of catching the illness.

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From confidence to quarantine: how coronavirus swept Italy

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Undetected transmissions in early stage of outbreak at heart of current difficulties

Italy appeared well ahead of the curve when the coronavirus outbreak began to spread outside China.

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Coronavirus live updates: Italy-wide lockdown comes into force

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UK and US had worst days trading since 2008 GFC; Global cases near 110,000; Grand Princess passengers disembark. Follow the latest news.

As the whole of Italy goes into lockdown, there are some reassuring signs that measures are starting to work. Across the 11 towns that went into quarantine over two weeks ago, the number of cases is beginning to fall.

Virgin Atlantic has called on the European Commission and UK flight slots co-ordinator to relax rules amid the coronavirus outbreak, PA reports.

Chief executive Shai Weiss said: “Last month Virgin Atlantic and industry partners committed to achieving net zero carbon by 2050.

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Second person ever to be cleared of HIV reveals identity

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Adam Castillejo, known as the London patient, goes public to give hope to others with illness

The second person ever to be cleared of HIV has revealed his identity, saying he wants to be an “ambassador of hope” to others with the condition.

Adam Castillejo, the so-called London patient, was declared free of HIV last year, 18 months after stopping antiretroviral therapy following a stem cell – or bone marrow – transplant to treat blood cancer.

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Can a face mask stop coronavirus? Covid-19 facts checked

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The truth about how easy it is to catch coronavirus, who is most vulnerable and what you can do to avoid infection

Wearing a face mask is certainly not an iron-clad guarantee that you won’t get sick – viruses can also transmit through the eyes and tiny viral particles, known as aerosols, can penetrate masks. However, masks are effective at capturing droplets, which is a main transmission route of coronavirus, and some studies have estimated a roughly fivefold protection versus no barrier alone (although others have found lower levels of effectiveness).

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How did China get to grips with its coronavirus outbreak?

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World is looking at Beijing to see what lessons can be learned as new cases of infections fall

As coronavirus infections around the world rise, the number of new cases in China has plummeted dramatically, prompting some observers to look to Beijing for lessons.

In recent days, the number of daily new cases in China has gone from almost 2,000 less than three weeks ago to under 100. On Monday, China’s national health commission reported 40 new cases, its lowest daily since authorities began tracking the outbreak in January. According to the official figures, new infections in the rest of China, outside of Hubei province which has been hardest hit, have almost completely stopped.

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Coronavirus symptoms: what are they and should I see a doctor?

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What are the symptoms caused by the virus from Wuhan in China, how does it spread, and should you call a doctor?

It is caused by a member of the coronavirus family that has never been encountered before. Like other coronaviruses, it has come from animals. Many of those initially infected either worked or frequently shopped in the Huanan seafood wholesale market in the centre of the Chinese city.

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Can a face mask stop it spreading? Coronavirus facts checked

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The truth about how easy it is to catch Covid-19, who is vulnerable and what you can do to avoid infection

Wearing a face mask is certainly not an iron-clad guarantee that you won’t get sick – viruses can also transmit through the eyes and tiny viral particles, known as aerosols, can penetrate masks. However, masks are effective at capturing droplets, which is a main transmission route of coronavirus, and some studies have estimated a roughly fivefold protection versus no barrier alone (although others have found lower levels of effectiveness).

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Coronavirus: nine reasons to be reassured

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Yes, Covid-19 is serious, but context is key and the world is well placed to deal with it

The coronavirus epidemic plainly poses an exceptionally serious global problem: in a few short weeks, it has spread from China to more than 80 countries, infecting more than 100,000 people so far and causing more than 3,400 deaths.

But as we are hit with minute-by-minute updates from around the world, experiencing the advance of Covid-19 in real time – news alerts, huge headlines, social media hysteria – there’s a risk that we might lose some essential context.

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Before and after: coronavirus empties world’s busiest spaces

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Aerial images reveal impact of outbreak on famous holy sites and capital cities

Empty public squares, a highway with no cars on it and deserted holy sites – a series of striking satellite images have revealed the impact of the coronavirus epidemic on some of the world’s busiest spaces.

The aerial photographs, released by Colorado-based space technology firm Maxar, show normally bustling spots from Mecca to Beijing thinned of people.

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Inside the cruise ship that became a coronavirus breeding ground

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As contagion swept through the Diamond Princess, its crew had to carry on working. Here, they recall the climate of chaos and fear that prevailed during the ship’s two-week quarantine

Christian Santos* remembers staying awake at night, anxiously listening to the sound of his colleague coughing. They were sleeping below deck, in one of the small rooms shared by workers on board the stricken Diamond Princess cruise ship.

He had spent the previous two weeks serving guests who were confined to their rooms, and watching the miserable failure of disease-control measures on the vessel. Now he knew the coronavirus, which had already transmitted to hundreds of people onboard, had almost certainly entered his own cabin.

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Coronavirus latest updates: Italy death toll nears 200 with almost 4,000 cases

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First cases reported in Vatican City, Peru and Serbia, while France has further 190 patients, bringing total number to 613

If you’d like to read a summary of the day’s events, here’s our coronavirus at-a-glance article from earlier this evening:

Related: Coronavirus latest: at a glance

A 15th person has died in the USA, according to a hospital in Washington state – the worst-hit in the union. EvergreenHealth Medical Center in the Seattle suburb of Kirkland has reported the state’s 12 death.

Kirkland is the site of an outbreak at a nursing facility, where at least six people have died.

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Chinese police place Britons in enforced isolation after ferry trip

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Teacher was given 20 minutes to pack and must remain in hotel room for two weeks

Jo Davison and her partner were relaxing in their flat in Shenzhen, China, when the phone rang. She was told by the Chinese authorities that they had been exposed to the coronavirus at close proximity and that officials were on their way.

“It was terrifying. Five people in hazmats turned up at our apartment, they looked like ghostbusters,” she said. “They took swabs from our nose and throat and said they’d return in the morning so we should start packing.”

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Is coronavirus mutating into a more deadly strain? Covid-19 myths busted

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The truth about the protective value of face masks and whether it’s easy to catch Covid-19

All viruses accumulate mutations over time and the virus that causes Covid-19 is no different. How widespread different strains of a virus become depends on natural selection – the versions that can propagate quickest and replicate effectively in the body will be the most “successful”. This doesn’t necessarily mean most dangerous for people though, as viruses that kill people rapidly or make them so sick that they are incapacitated may be less likely to be transmitted.

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Coronavirus symptoms: what are they and should I go to the doctors?

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What are the symptoms caused by the virus from Wuhan in China, how does it spread, and should you call a doctor?

It is caused by a member of the coronavirus family that has never been encountered before. Like other coronaviruses, it has come from animals. Many of those initially infected either worked or frequently shopped in the Huanan seafood wholesale market in the centre of the Chinese city.

Continue reading...