Salt Lake Tribune file
In this Feb. 10, 2011 file photo, downtown Vernal, Utah is shown. State health officials are pledging to look into claims that stillbirths are on the rise in the Eastern Utah community of Vernal, that is home to a boom in gas and oil development. Activists say a climbing rate of neonatal deaths in the Uinta Basin stems from industrial smog. But researchers and health officials aren’t ready to draw such a link.