The effect is most pronounced in counties with many drinking water wells, indicating that contamination by "produced water" from fracking is a likely cause.
On May 1, workers have a chance to confront Trump by turning the tricks of his trade back on him -- dealing in the language of power.
David Kristjanson-Gural is associate professor of economics and senior fellow of the Social Justice College at Bucknell University. His writing appears in the LA Progressive, Commondreams.org, the Williamsport Guardian and the Daily Item. He is a member of the Spilling Ink Writers' Collective.