Jill Neimark, science journalist, will speak on "Activism Can Work: When a Big Polluter Came Courting Macon, Here's How We Fought Back." Dr. Jennifer Barkin, professor of community medicine and OBGYN at the Mercer University School of Medicine, will speak on "Effects of Extreme Weather Events on Perinatal Mental Health." Brooke Lappe, Ph.D. student in…