6,170 articles mezi dny 1.8.2020 a 31.8.2020

UK agrees deals for 90m doses of two potential coronavirus vaccines

Government secures early access to those being developed by Novavax and JanssenCoronavirus – latest updatesSee all our coronavirus coverageThe UK government has reached agreements it says will give British citizens early access to 90m doses of two more potential Covid-19 vaccines.The vaccines are being developed by the US biotech company Novavax and the pharmaceutical business Janssen, which is...

Experience: I helped a snail find love

It is difficult for lefty snails to mate with normal snails because they have genitals on the opposite side of their headIt began when a retired scientist at the Natural History Museum in London told me that he had found a rare garden snail with a left-coiling shell. In 20 years of researching the genetics of snails at universities around the world, I had never found a “lefty” garden snail. My...

A college kid’s fake, AI-generated blog fooled tens of thousands. This is how he made it.

At the start of the week, Liam Porr had only heard of GPT-3. By the end, the college student had used the AI model to produce an entirely fake blog under a fake name. It was meant as a fun experiment. But then one of his posts found its way to the number-one spot on Hacker News. Few people noticed that his blog was completely AI-generated. Some even hit “Subscribe.” While many have...

Research recommends integrated approaches to managing reniform nematodes in cotton

While there are many pests affecting cotton, the reniform nematode is one the most damaging, with the ability to cause annual losses of approximately $33 million within the Mid-Southern United States. Farmers struggle to manage this pest as commercially available resistance is not widespread and a limited number of products are commercially available for use in suppressing the reniform nematode.

Reconstructing global climate through Earth's history

A key component when forecasting what the Earth's climate might look like in the future is the ability to draw on accurate temperature records of the past. By reconstructing past latitudinal temperature gradients (the difference in average temperature between the equator and the poles) researchers can predict where, for example, the jet stream, which controls storms and temperatures in the...

Britain's coronavirus death rate is down, but the unanswered question is why | Charlotte Summers

Some have suggested we’re now successfully treating Covid-19, or that ‘herd immunity’ has finally arrived. Neither is trueCoronavirus – latest updatesSee all our coronavirus coverageWhy has the mortality rate for coronavirus decreased in the UK? The Intensive Care National Audit and Research Centre has analysed data from more than 10,000 patients admitted to intensive care units in...

Victoria reports 14 more coronavirus deaths, including man in his 20s

Premier Daniel Andrews announces 372 new cases as chief health officer Brett Sutton says he is ‘confident’ Covid-19 outbreak has peakedFollow today’s Australian coronavirus live blogAustralian stats interactive; Vic cases map; NSW cases map; NSW hotspots listState by state Covid restrictions; Melbourne stage 4 restrictions; Vic stage 3 rulesSign up for Guardian Australia’s coronavirus...

UK holidaymakers in race to return from France before quarantine deadline

Channel Tunnel warns it doesn’t have capacity for extra travellers trying to get home before 4am on Saturday Coronavirus – latest updatesSee all our coronavirus coverageThe UK’s airports and ports were braced for travel chaos on Friday as some of the hundreds of thousands of British holidaymakers in France race to return home before new quarantine rules kick in.Summer plans have been thrown...

A star is reborn: dust cloud blamed for dimming of Betelgeuse

Mystery had enthralled skywatchers since the star began to lose luminosity last October – with some suggesting it could explodeThe sudden dimming of one of the Milky Way’s brightest stars, Betelgeuse, could be due to a dust cloud spewing up from its surface, astronomers have said.The mystery has enthralled skywatchers since the star – part of the Orion constellation – began to lose...

A method has been developed to study extreme space weather events

An international team of scientists developed a method to study fast Coronal Mass Ejections, powerful ejections of magnetized matter from the outer atmosphere of the Sun. The results can help to better understand and predict the most extreme space weather events and their potential to cause strong geomagnetic storms that directly affect the operation of engineering systems in space and on Earth.

Achieving highly efficient ammonia synthesis by altering the rate-determining step

The electrochemical conversion of nitrogen to ammonia is the most promising alternative of the traditional Haber-Bosch process to achieve nitrogen fixation under ambient conditions. In this strategy, activation of high-energy triple-bonds of nitrogen is the most significant bottleneck and is commonly considered as the rate-determining step of ammonia synthesis. Scientists based in China...

An AI algorithm to help identify homeless youth at risk of substance abuse

While many programs and initiatives have been implemented to address the prevalence of substance abuse among homeless youth in the United States, they don't always include data-driven insights about environmental and psychological factors that could contribute to an individual's likelihood of developing a substance use disorder. Now, an artificial intelligence (AI) algorithm developed by...

Cardiovascular risk factors tied to COVID-19 complications and death

COVID-19 patients with cardiovascular comorbidities or risk factors are more likely to develop cardiovascular complications while hospitalized, and more likely to die from COVID-19 infection, according to a new study published August 14, 2020 in the open-access journal PLOS ONE by Jolanda Sabatino of Universita degli Studi Magna Graecia di Catanzaro, Italy, and colleagues.

Climate stabilization: Lessons from the corona crisis

Highlighting the parallels between the global health and the climate emergency, a team of researchers from the Potsdam Institute for Climate Impact Research (PIK) has analyzed what policy makers and citizens can learn from the corona outbreak and how to apply it to the global effort of reducing CO2 emissions. Their proposal: A Climate Corona Contract that unites the younger and the older...