Wearable device measures cortisol in sweat

By drawing in a bit of sweat, a patch can reveal how much cortisol a person is producing. Cortisol is known as the stress hormone but is involved in many important physiological functions.

World's fastest human-made spinning object could help study quantum mechanics

Researchers have created the fastest human-made spinning object in the world, which they believe will help them study material science, quantum mechanics and the properties of vacuum.

New material: Two faces offer limitless possibilities

Named for the mythical god with two faces, Janus membranes -- double-sided membranes that serve as gatekeepers between two substances -- have emerged as a material with potential industrial uses.

New study shows certain video games can improve health in children with obesity

A new study showed for the first time that video games, in combination with fitness coaching and a step tracker, helped overweight children lose weight, lower their blood pressure and cholesterol and increase their physical activity.

Protecting autonomous grids from potentially crippling GPS spoofing attacks

Not long ago, getting a virus was about the worst thing computer users could expect in terms of system vulnerability. But in our current age of hyper-connectedness and the emerging Internet of Things, that's no longer the case. With connectivity, a new principle has emerged, one of universal concern to those who work in the area of systems control. That law says, essentially, that the more complex and connected a system is, the more susceptible it is to disruptive cyber-attacks.

New solar sailing technology for NASA

Researchers is taking solar sailing to the next level with advanced photonic materials. This new class of materials could be used to steer reflected or transmitted photons and enable near-Earth, interplanetary and interstellar space travel.

Traveling to the sun: Why won't Parker Solar Probe melt?

This summer, NASA's Parker Solar Probe will launch to travel closer to the Sun, deeper into the solar atmosphere, than any mission before it. Cutting-edge technology and engineering will help it beat the heat.

Physics treasure hidden in a wallpaper pattern

An international team of scientists has discovered a new, exotic form of insulating material with a metallic surface that could enable more efficient electronics or even quantum computing. The researchers developed a new method for analyzing existing chemical compounds that relies on the mathematical properties like symmetry that govern the repeating patterns seen in everyday wallpaper.

Relaxor ferroelectrics: Relax, just break it

Scientists are helping to answer long-held questions about a technologically important class of materials called relaxor ferroelectrics.

New battery could store wind and solar electricity affordably and at room temperature

A new type of flow battery that involves a liquid metal more than doubled the maximum voltage of conventional flow batteries and could lead to affordable storage of renewable power.

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