Emily Oster's "Don't take your vitamins" on January 12, 2015 causality covariate fivethirtyeight health longitudinal research meta-analysis observational research preventative medicine replication research methods vitamins +
NPR's "In Pregnancy, What's Worse? Cigarettes Or The Nicotine Patch?" on January 20, 2014 developmental psychology hypothesis testing NPR observational research pregnancy smoking +
The Atlantic's "Congratulations, Ohio! You Are the Sweariest State in the Union" on December 16, 2013 archival data content analysis data mining graphs and charts humor observational research replication swearing The Atlantic +