Federal wildlife officials are now paying hunters back for trying non-lead ammunition, turning a long-running conservation debate into a practical question about receipts, proof of a hunt, and where ...

A close-up image of a dark crystal held between two metal rods on a yellow background Researchers created a lead-free piezoelectric material (shown under a microscope), which could provide a ...

Ferroelectric materials are used in infrared cameras, medical ultrasounds, computer memory and actuators that turn electric properties into mechanical properties and vice-versa. Most of these ...