The impacts of environmental change on human outcomes often depend on local exposures and behavioral responses that are challenging to observe with traditional administrative or sensor data. We show how data from private pollution sensors, cell phones, social media posts, and internet search...

The mathematisation of finance - excessive use of mathematical models in finance - has been blamed for the recent financial and economic crisis. We argue that the problem might actually be the financialisation of mathematics, as evidenced by the gradual embedding of branches of mathematics into...

Steady improvements in ambient air quality in the US over the past several decades have led to large public health benefits, and the policies that helped drive these improvements are considered landmarks in successful environmental policymaking. However, recent trends in PM2.5 concentrations, a...

Changepoint detection methods originated in Shewhart’s seminal work on quality control in industrial production (Shewhart, 1931, 1939). Wald then pioneered sequential statistical analysis to test hypotheses successively as new data become available (Wald, 1945; Wolfowitz and Wald, 1948). Over the...