How accurate are dog-activity trackers?

There are countless gadgets available these days for people to track everything from our heart rate to our stress levels. So perhaps it's no surprise that there also are quite a few products that now claim to similarly monitor ...

Permanent, wireless self-charging system using NIR band

As wearable devices are emerging, there are numerous studies on wireless charging systems. Here, a KAIST research team has developed a permanent, wireless self-charging platform for low-power wearable electronics by converting ...

Video: Stretchy wires for the future

Scientists at Duke Chemistry, NC State Engineering and the University of California – San Diego have teamed up to create stretchable, flexible wires that conduct current and change colors to indicate they're about to reach ...

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