List of All Articles with Tag 'h'

The list of people who remain unaccounted for after Maui’s wildfire disaster dropped to 388, a significant decline

Baffled scientists are trying to unravel the mystery of how a meteorite left Earth’s atmosphere and somehow came back again. Unlike boomerangs, meteorites don’t have a reputation for coming back around again, so when a black rock found in Morocco in 2018 seemed to have done just that, it left the scientific community confused. The rock, whose official name is Northwest Africa (NWA) 13188, is a scientific first (that we know of) to have left the Earth’s atmosphere, gone into outer space and returned again. The 646-gram piece of rock is remarkable not only for its journey but also its makeup. NWA 13188 has a bubbly texture and contains crystals. Its chemical components suggest that the rock is made out of the minerals produced by molten minerals that come from volcanic activity. It also possesses trace elements and oxygen isotopes, which suggests to scientists that it is not the typical meteorite that originates in space, but instead, it originated on Earth itself. However, according to a geophysicist from the French National Centre for Scientific Research, Jérôme Gattacceca, who studied the rock and presented the findings, it has undergone an interesting journey in orbit. Scientists can identify this because of the presence and concentration levels of Helium-3, Beryllium-10, and Neon-21, which suggest exposure to cosmic rays that are not present in Earth’s atmosphere. Compared to other more traditional meteorites scientists have studied, the concentrations are lower on NWA 13188 but are still higher than rocks on Earth. It is thought that NWA 13188 could have been expelled from Earth and in orbit for thousands of years. Scientists said, “We consider NWA 13188 to be a meteorite, launched from the Earth and later re-accreted to its surface”. Despite the rock originating on Earth, the team said it fits the definition of a meteorite since it has achieved orbit. The definition states: “Material launched from a celestial body that achieves an independent orbit around the Sun or some other celestial body, and which eventually is re-accreted by the original body, should be considered a meteorite. “The difficulty, of course, would be in proving that this had happened, but a terrestrial rock that had been exposed to cosmic rays and had a well-developed fusion crust should be considered a possible terrestrial meteorite.” It is not yet understood how the rock came to be launched from Earth into space, as researchers said it still “remains to be determined”. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

The emphasis on a good night's sleep is nothing new. But now, neuroscientist, Dr Andrew Huberman, has shared one routine that he suggested can make you "better at everything." In a YouTube talk on After Skool, Dr Huberman said he immediately starts his day with a sunrise walk at 6.30am. "Getting outside for a 10-minute walk or a 15-minute walk is absolutely vital to mental and physical health," he shared. Despite coffee being the get-up-and-go drink for most, Huberman says the first beverage he consumes is salty water, as he claims it helps improve bodily functions. "There are certain foundational behaviours - certain dos and don'ts that set the stage for you to be better at everything," he continued. "It always comes back to two elements - that's sleep and what I call non-sleep deep rest. Sleep is the fundamental practice or part of our 24-hour cycle where if you don't get it on a consistent basis, you are down-regulating your ability to do everything." He went on to discuss a "90-minute bout of work," in which he says he turns his phone off to fully optimise this time. "You'd be amazed how much you can get done in 90 minutes if you are focused," he said. Huberman then ensures he gets in an hour's worth of exercise before exposing himself to cold temperatures such as an ice bath. The NHS states that there are no official guidelines regarding how much sleep a person should get each night as everyone is different. "On average, a 'normal' amount of sleep for an adult is considered to be around seven to nine hours a night. Children and babies may sleep for much longer than this, whereas older adults may sleep less," they wrote. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

An overview of the media in St Kitts and Nevis, as well as links to broadcasters and newspapers.

Robots could soon take over doctors’ jobs, according to experts. A recent study found that AI technology was able to accurately diagnose patients in a healthcare setting. Investigators found the controversial model ChatGPT to be nearly 72 per cent accurate in making clinical decisions. It was also 77 per cent accurate in making final diagnoses. It was able to come up with possible diagnoses, final diagnoses and care management decisions. The artificial intelligence chatbot was found to perform equally well in both primary care and emergency settings. Researchers at Mass General Brigham in Boston, Massachusetts conducted the study. They tested how ChatGPT would be able to work through an entire clinical encounter with a patient. This included recommending a diagnostic workup, deciding the clinical management course, and ultimately making the final diagnosis. It was tested by putting 36 published clinical descriptions into ChatGPT. Patient gender, age and symptoms were put into the language model. ChatGPT was then given further information and asked to make management decisions and a final diagnosis. This simulates the process of seeing a real patient. However, scientists also found it was less accurate - 60 per cent - at making several possible diagnoses. Co-author Marc Succi said: “Our paper comprehensively assesses decision support via ChatGPT from the very beginning of working with a patient through the entire care scenario, from differential diagnosis all the way through testing, diagnosis, and management. ”No real benchmarks exist, but we estimate this performance to be at the level of someone who has just graduated from medical school, such as an intern or resident. ”This tells us that LLMs in general have the potential to be an augmenting tool for the practice of medicine and support clinical decision making with impressive accuracy.” The research team say they will soon be looking at whether AI tools can improve patient care and outcomes in resource-constrained areas of hospitals. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

Notes on the media in St Vincent and the Grenadines, links to the broadcasters and newspapers

Unlike in the UK, grades were still boosted to reduce the effects of the Covid-19 pandemic.

By Casey Hall and Albee Zhang BEIJING (Reuters) -Chinese consumers stayed away from sea food stalls and rushed to stock

A study published by academics at the University of Chicago has found that corporate emissions are undermining prosperity.

The world's largest tech companies must comply with a sweeping new European law starting Friday that affects everything from social media moderation to targeted advertising and counterfeit goods in e-commerce.

Jakarta has been blanketed in smog that has made its air quality the worst in the world as

India's space agency Isro's footage shows Chandrayaan-3's rover Pragyaan for the first time ever.