Rachel Bronson Browse All Authors Top 4 quotes by Rachel Bronson We really track existential threats that are man-made, but the factors that have really moved the clock have always been nuclear from the beginning. Rachel Bronson latest-headlines We really track existential threats are that are man-made, but the factors that have really moved the clock have always been nuclear from the beginning. Rachel Bronson politics We’ve moved it backward and forward pretty equally in Republican and Democratic administrations, that’s a criticism or a charge that’s been unfounded. Rachel Bronson politics It’s really a judgment, they’re not back there calculating anything, though they do that frequently in their every day jobs. Rachel Bronson politics