An unknown methane-producing process is likely at work in the hidden ocean beneath the icy shell of Saturn's moon Enceladus, suggests a new study published in Nature Astronomy by scientists at the University of Arizona and Paris Sciences&Lettres University.

Adolescent girls and young women can and will use HIV prevention products with consistency, according to interim results of a study of two different methods: daily use of the antiretroviral (ARV) tablet Truvada® as oral pre-exposure prophylaxis (PrEP) and the monthly dapivirine vaginal ring, a new HIV prevention product currently under regulatory review in several countries.

To provide protection against HIV, both must be used consistently- daily, for oral PrEP, and for the ring, a full month at a time - which previous studies of these products found to be especially challenging for younger women.

In an observational study using data from the Veterans Health Administration for 2,344 U.S. veterans hospitalized with COVID-19, remdesivir treatment was associated with prolonged hospitalization but wasn't associated with improved survival. 

There is a belief that Airbnb listings cause increased crime in residential neighborhoods - or at least annoying late-night parties which increase risk of crimes. However, a new paper suggests that while Airbnb listings can be linked to a reduction in the local social dynamics that prevent crime, it isn't the tourists committing the crimes. And it takes years, which means Airbnb listings may be a symptom rather than the cause.

A new paper has statistically linked inflammatory bowel disease, an umbrella term for chronic inflammation of the digestive tract, to processed foods. But because every food is processed - no one eats wheat that hasn't been milled - the term has now become "ultra-processed."

Raw food, from milk to meat, can obviously bring higher risk of bacteria. The raw milk fad in the US creates risk of illness orders of magnitude higher than milk that has been pasteurized to remove harmful bacteria.

In Europe, the 'raw' dog food fad may be creating something even worse; multidrug-resistant bacteria identical to those found in hospital patients. Drug-resistant infections kill an estimated 700,000 people a year globally and, with the figure projected to rise to 10 million by 2050 if no action is taken, the World Health Organisation (WHO) classes antibiotic resistance as one of the greatest public health threats facing humanity.