New evidence supports surgery for rare type of brain lymphoma

Through a systematic review of published studies going back 50 years, Johns Hopkins Medicine researchers say they have identified a distinct subtype of primary central nervous system (PCNS) lymphoma that should be considered for surgical removal, suggesting a major shift in how this type of tumor is evaluated and managed.

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Ultra-small microbes exhibit extreme survival skills in Ethiopia's Mars-like wonderland

The first study of ultra-small bacteria living in the extreme environment of Ethiopia's Dallol hot springs shows that life can thrive in conditions similar to those thought to have been found on the young planet Mars. An international team of researchers lead by Dr. Felipe Gómez from Astrobiology Center in Spain (CAB (CSIC-INTA)) has found a strain of the Nanohaloarchaeles Order bacteria embedded in samples taken from a salt chimney deposited by supersaturated water at temperatures of 89 degrees Celsius and at the extremely acidic pH of 0.25.

* This article was originally published here

K-Athena: a performance portable magnetohydrodynamics code

Running large-scale simulations is a crucial aspect of modern scientific research, yet it often requires a vast amount of computational resources. As we approach the era of exascale computing, which will be marked by the introduction of highly performing supercomputers, researchers have been trying to develop new architectures and codes to meet the huge computational requirements of our times. An important property to consider when developing codes for the exascale computing era is performance portability, which prevents the repeated, non-trivial refactoring of a code for different architectures.

* This article was originally published here

Thirty years after anorexia onset, fewer ill than healthy

A study that started in 1985 followed some 50 people who had become anorexic in their teens. It shows that 30 years later, the majority were healthy but some had persistent eating disorders. The study, published in the British Journal of Psychiatry, was carried out at Sahlgrenska Academy, University of Gothenburg.

* This article was originally published here

Brazil braces for another tailings dam collapse

Thousands of Brazilians braced Monday for the possible collapse of another tailings dam owned by mining giant Vale that threatens to spew millions of tons of toxic sludge over towns, rivers and forest.

* This article was originally published here