The U.S. R&D enterprise relies on businesses, federal and nonfederal governments, higher education institutions, and other nonprofit organizations. This report identifies trends in R&D performance and funding and compares them to those of the world's other major economies. The U.S. annual total of R&D has expanded steadily since 2010…

Citizen science, in which volunteers work with professional scientists to conduct research, is expanding due to large online datasets. To plan projects, it is important to understand volunteers' motivations for participating. This paper analyzes results from an online survey of nearly 11000 volunteers in Galaxy Zoo, an astronomy citizen science…