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Buried lakes of liquid water discovered on Mars

Buried lakes of liquid water discovered on Mars

Science
Three new underground lakes have been detected near the south pole of Mars.Scientists also confirmed the existence of a fourth lake - the presence of which was hinted at in 2018.Liquid water is vital for biology, so the finding will be of interest to researchers studying the potential for life elsewhere in the Solar System.But the lakes are also thought to be extremely salty, which could pose challenges to the survival of any microbial life forms.Billions of years ago, water flowed in rivers and pooled in lakes on the Martian surface. But Mars has since lost much of its atmosphere, which means water can't stay liquid for long on the surface today.However, it's a different matter underground. Is there life floating in the clouds o...
Liquid biopsy may predict breast cancer recurrence

Liquid biopsy may predict breast cancer recurrence

Health
Dec. 13 (UPI) -- A new tool could make it easier to predict whether early-stage triple-negative breast cancer will return following chemotherapy. In study results expected for presentation Friday at the 2019 San Antonio Breast Cancer Symposium, researchers used a liquid biopsy -- FoundationOne Liquid, manufactured by a company called Foundation Medicine -- that detects circulating tumor DNA, or ctDNA, in a blood test to predict cancer recurrence. "If you are a woman with triple-negative breast cancer, after surgery you are in a constant 'watch and wait' scenario, in fear of the cancer coming back," said study co-author Milan Radovich, an associate professor of surgery and medical and molecular genetics at Indiana University School of Medicine. "We know that a significant proportion of th...
The FDA Issued a Warning About Foods Prepared With Liquid Nitrogen—Here’s What You Need to Know

The FDA Issued a Warning About Foods Prepared With Liquid Nitrogen—Here’s What You Need to Know

Health
That smoky dessert tray isn't as innocent as it looks. We're always seeing crazy-fun food fads in our social feeds, like the liquid nitrogen trend. You've probably seen it too: When this chemical is added to a cocktail. for example, or to treats like ice cream and cereal, it creates a smoky, vapor-like effect that's super Instagrammable. Now, the Food and Drug Administration (FDA) has weighed in on liquid nitrogen–infused foods and drinks, and they're urging people to avoid consuming anything prepared with this potentially dangerous substance. The FDA warning, issued on Thursday, states that the agency has has become aware of severe, and in some...
Water exists in two distinct liquid phases

Water exists in two distinct liquid phases

Science
June 26 (UPI) -- Water differs from other liquids in a variety of ways, many of which make it essential for life. New research has identified another unusual property: water exists in two distinct liquid phases."Water can exist as two different liquids at low temperatures where ice crystallization is slow," Anders Nilsson, a professor of physical chemistry at Stockholm University, said in a news release.Researchers used high-powered X-rays to image water at low temperatures, revealing two distinct molecular structures. Each structure proved to represent liquid phases."It is very exciting to be able to use X-rays to determine the relative positions between the molecules at different times," said Fivos Perakis, a postdoctoral researcher at Stockholm University. "We have in particular been ab...