Biogeochemical transformations are natural pathways that involve multiple chemical, geological, and/or biological parts of an ecosystem.

Climate science, or climatology, is the study of Earth’s climate. Climate scientists want to better understand our planet’s atmosphere and how it affects various ecosystems. Many equate climate with the weather. And indeed, the word climate is usually defined as the average weather conditions in a particular area over a long-term period, such as years or decades. But climate science touches far more than weather trends.

Export controls are U.S. laws and regulations that govern the shipment, transmission, or transfer of sensitive equipment, information, and software to foreign countries, persons, or entities. Export controls exist to protect the national security and foreign policy interests of the United States. These laws and regulations work to achieve adequate oversight on the transfer and use of the products and materials required for developing proliferation-sensitive parts of the nuclear fuel cycle.

Bioinformatics uses computers to make sense of the vast amount of data researchers can now glean from living things. These things can be as seemingly simple as a single cell or as complex as the human immune response. Bioinformatics is a tool that helps researchers decipher the human genome, look at the global picture of a biological system, develop new biotechnologies, or perfect new legal and forensic techniques, and it will be used to create the personalized medicine of the future.

Graph analytics is the evaluation of information that has been organized as objects and their connections. The purpose of graph analytics is to understand how the objects relate or could relate.

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.

Deep reinforcement learning can best be explained as a method to learn to make a series of good decisions over some time.

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.