This paper explores the spillover of protests across countries using data on nonviolent and spontaneous demonstrations for 200 countries from 2000 to 2020. Using an autoregressive spatial model, the analysis finds strong evidence of "contagious protests," with a catalyzing role of social media....

Advances in digital technology are expanding the boundaries of firms. Digital platform firms, which leverage a "platform" to create value through facilitating exchanges between two or more interdependent groups, are the new disrupters in the market. They exhibit distinct features such as scale...

With all the recent attention focused on big data, it is easy to overlook that basic vital statistics remain difficult to obtain in most of the world. This project set out to test whether an openly available dataset (Twitter) could be transformed into a resource for urban planning and...