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.

Advanced computing testbeds, the proving grounds for new machines, are central to the development of next-generation computers. They allow researchers to explore a complex and non-linear design space and facilitate the evaluation of new computing technologies in terms of performance and efficiency on critical scientific workloads. These “laboratories of machines,” in which multiple components are available for experimentation, are critical to the next greatest advancements in computation.

Fentanyl analogs are illicit—and often deadly—alterations of the medically prescribed drug fentanyl. The analogs have similar—but not the same—chemical structure, and they mimic the pharmacological effects of the original drug.