Fish passage refers to the ability to effectively and efficiently allow fish to move through a water system, including successfully navigating human-made structures like dams and culverts, which can impede their journey.

Export controls regulate the trade of sensitive goods, technologies, and information to protect national security and support compliance with global trade laws.

Fentanyl analogs are illicit—and often deadly—alterations of the medically prescribed drug fentanyl. The analogs have similar chemical structure, and they mimic the pharmacological effects of the original drug.