Ancient Martian lake system records two water-related events

: Current and former graduate students at Brown University combined images from NASA’s CTX instrument with mineralogical data from NASA’s CRISM orbiting spectrometer to create a geologic history of flowing water on the surface of Mars nearly 4 billion years ago.

Researchers develop ‘visual Turing test’

Computers are able to recognize objects in in photographs and other images, but how well can they “understand” the relationships or implied activities between objects? Researchers have devised a method of evaluating how well computers perform at that task.
Nursing home care

Linked: Knowledge of palliative care and less end-of-life disruption

The greater a director of nursing’s knowledge of palliative care the lower the likelihood that nursing home patients will experience futile, aggressive end-of-life care, according to a new large national study. The association was evident whether or not hospice care was available.

Researchers find promising new biomarkers for concussion

A panel of four readily detectable blood proteins can accurately indicate concussion, even helping distinguishing it from other injuries, according to a new study. Researchers at Brown University and Lifespan found the panel by employing the unusual strategy of looking at the body’s inflammatory response to trauma, which might also be a therapeutic target.
“Things are going to get really exciting’

Dawn spacecraft to orbit Ceres for a year

Having visited the asteroid Vesta, NASA’s Dawn spacecraft has entered orbit around the dwarf planet Ceres, the largest object in the asteroid belt. Ceres and Vesta have very different histories.
Silicon telluride

Brown chemists make new silicon-based nanomaterials

A new process developed by researchers at Brown University uses silicon telluride to produce multilayered two-dimensional semiconductor materials in a variety of shapes and orientations.

A better method for making perovskite solar cells

Researchers at Brown University have developed a new method for making solar cells from perovskite — a faster, more straightforward method that can produce flexible, high-efficiency, thinner cells.

Mutation may cause early loss of sperm supply

Problems in a gene responsible for producing the protein TAF4b leave mice — and maybe men — unable to sustain sperm production. As embryos, mice lacking the protein failed to develop an adequate number of key cells in the sperm production process and as adults they quickly lost their initial fertility.