Signs of burnout can be detected in sweat

EPFL engineers, working in association with startup Xsensio, have developed a wearable system that can continually measure the concentration of cortisol—the stress hormone—in human sweat. Their device can eventually help ...

Flies sleep when need arises to adapt to new situations

Flies that cannot take to the air respond by sleeping more as they learn to adapt to their flightlessness, according to a study from Washington University School of Medicine in St. Louis. The findings, published May 8 in ...

Stress in Earth's crust determined without earthquake data

Scientists at Los Alamos National Laboratory have developed a method to determine the orientation of mechanical stress in the earth's crust without relying on data from earthquakes or drilling. This method is less expensive ...

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