Justin Nobel, a reporter with Rolling Stone magazine, and Sil Caggiano, Youngstown Fire Department senior battalion chief, are the next speakers in the Dr. Ray Energy and Environment Speaker Series at Youngstown State University.

The free presentation, sponsored by the YSU James Dale Ethics Center and the Ohio Community Rights Network, focuses on the dangers of radioactive fracking waste.

Nobel has spent the past 20 months reporting on the issue of the radioactivity brought to the surface in oil and gas production and the many pathways of contamination posed to workers, the public, communities and the environment.

Caggiano will share his concerns over the danger to both first responders and residents from the fracking industry.

The program starts at noon Saturday in Room B100 of Cushwa Hall.