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Science News for May 18, 2014


Illuminating neuron activity in 3-D

Scientists have developed a new imaging system that reveals neural activity throughout the brains of living animals in 3-D. The technique allows for simultaneous imaging of every neuron in the worm Caenorhabditis elegans and the entire brain of a zebrafish larva, providing a more complete picture of nervous system activity.

SourceMassachusetts Institute of Technology·JournalNature Methods·DateMay 18, 2014

How does snow affect the amount of water in rivers?

New research shows that the amount of water flowing through rivers in snow-affected areas depends on how much precipitation falls as snowfall. In a warming climate, reduced snowfall leads to decreased river discharge. The study highlights the importance of streamflow for society, including ecosystem stability and hydropower.

SourceUniversity of Bristol·JournalNature Climate Change·DateMay 18, 2014

Study debunks common myth that urine is sterile

Researchers from Loyola University Chicago found bacteria in the bladders of healthy women, challenging the common belief that normal urine is sterile. The study also revealed differences in bladder bacteria between healthy women and those with overactive bladder (OAB), which may contribute to OAB symptoms.

Sepsis involved in high percentage of hospital deaths

A study published in JAMA found that sepsis is a major contributor to hospital mortality, with approximately 1 in 2 to 3 deaths attributed to the condition. Most patients who died from sepsis had the condition present at admission. The study highlights the need for improved standardized care for patients with less severe sepsis.

SourceJAMA Network·JournalJAMA·DateMay 18, 2014