New software acts like polarized sunglasses to improve accuracy of devices that measure the color of a plant's leaves to assess health.

A wireless network that gathers data from sensors no bigger than grains of salt could lead to implantable or wearable biomedical devices.

Sound waves thought to be from a 2014 meteor fireball were almost certainly vibrations from a truck rumbling along a nearby road.

A new sensor can detect cocaine, heroin, and fentanyl, even when they are combined with other drugs or additives like sugar and caffeine.

A featherlight pacemaker, powered by light and thinner than a human hair, can be implanted to regulate heart activity.

A smart wireless earring that monitors a user's earlobe temperature shows promise in monitoring stress, exercise, eating, and even ovulation.

A sensor that uses energy from sound waves to control electronic devices could, one day, save millions of batteries.

A failure to understand race means the development and testing of wearable health monitors can exacerbate existing health inequities.

A prototype millimeter-wave radar sensor can measure extremely small vibrations and movements while being energy-efficient and cheap to produce.

A self-driving robot that weighs about the same as a raisin only needs surrounding light or radio waves to run indefinitely.