Shirts for data nerds, by data nerds, many of whom are involved in O'Reilly Strata. All proceeds from the sale of these shirts go to Data Without Borders, an organization that matches non-profits in need of data analysis with freelance and pro bono data scientists who can work to help them with data collection, analysis, visualization, or decision support. Learn more at www.datawithoutborders.cc. Got an idea for a data shirt? Suggest it at reddit.com/r/datashirts.