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Among the 17-year-old boys who had not been victimised in the preceding year, the probability of violent fantasies in the last month was 56 per cent.

Proxima Centauri is a small but mighty star. It sits just four light-years or more than 20 trillion miles from our own Sun and hosts at least two planets, one of which may look something like Earth.

This model not only accounts for individuals' varying biological susceptibility to infection but also their levels of social activity, which naturally change over time.

A team of researchers from the University of British Columbia (UBC) computed air conditioning requirements in 60 of the world's most populous cities -- with the additional ventilation required due to Covid-19.

In the current study, detailed in the journal Cell, six days after the monkey embryos had been created, each one was injected with 25 human cells.

The antiviral MK-4482 significantly decreased levels of virus and disease damage in the lungs of hamsters treated for SARS-CoV-2 infection, according to a new study from the US National Institutes of Health scientists.

Large-scale supercomputer simulations at the atomic level showed that the dominant "G form" variant of the Covid-19 causing virus is more infectious partly.

"What really surprised me about the results is that we may realistically find signs of life on other planets in the next 5 to 10 years," said Caprice Phillips, a graduate student at The Ohio State University.

The contract is worth $2.9 billion and is part of NASA's Artemis programme, which aims to return astronauts to the moon by 2024 as a stepping stone to the first human mission to Mars, DPA news agency reported.

"We are still searching for its Achille's Heel so that we can develop optimal antivirals," Chanda said in a paper published in the journal Molecular Cell.

The researchers found that overall, one in seven women 13.8 per centcompared with one in 20 men 5.5 per cent reported feeling "very" to "extremely"

People with moderate exercise for at least five hours a week during early adulthood had 18 per cent lower risk of developing hypertension than for those who exercised less than five hours a week.

Paper wasps a social insect recognises the brightly coloured faces of other paper wasps. But, when reared in isolation, they tend to lose the ability, according to researchers from Cornell University

Researchers from the University of Cincinnati in the US found that a one-unit increase in particulate matter 2.5 was associated with a 60 per cent higher chance of hospitalisation for Covid-19 patients.

"Algorithms are able to do a huge number of tasks and the number of tasks that they are able to do is expanding practically every day," said researcher Eric Bogert from the University of Georgia.

The US Food and Drug Administration (FDA) and the Centres for Disease Control and Prevention (CDC) on Tuesday called for a pause on the Johnson & Johnson vaccine after six recipients of the jab developed a rare

"Neither social distancing nor mask wearing alone are likely sufficient to halt the spread of Covid-19, unless almost the entire population adheres to the single measure," said Maurizio

The study, led by researchers from the Pennsylvania State University in the US, showed that adults that used Facebook as an additional source of news in any way were less likely to answer Covid-19 questions correctly than those who did not.

Various studies over the years have demonstrated that women who breastfeed have a lower risk for developing cardiovascular disease and diabetes. But the mechanisms behind these risks were not fully understood.

While previous research linked high-sugar diets with obesity and heart disease and even impaired memory function, less is known about its effects on mental development particularly on the hippocampus brain region critical