This chapter reviews academic research on the connections between agglomeration and innovation. We first describe the conceptual distinctions between invention and innovation. We then describe how these factors are frequently measured in the data and some resulting empirical regularities....

The American Recovery and Reinvestment Act (ARRA) was the US government's fiscal response to the Great Recession. An important component of ARRA's $796 billion proposed budget was $318 billion in fiscal assistance to state and local governments. We examine the historical experience of federal...