LRAD sound weapons at protests use focused acoustic beams up to 162 decibels that cause permanent hearing damage, but distance and industrial earplugs provide effective protection.

SOUND-control is all about improving animal well-being, reducing antibiotic use, ensuring safe trade, and easing the burden of animal diseases on society. By standardizing surveillance methods, this ...

When U.S. rocket engineers talk about the bright possibilities of solid-fuel rockets, they always have to pause over one big requirement: how to control the fuel’s burning rate. A current system is to ...