In BALL LIGHTNING: Paradox of Physics, Paul Sagan lists 230 unpublished cases from Oak Ridge National Laboratories. By their mysterious propulsion, navigation, confinement and flight against winds, fireballs "defy" gravity.His novel Sagan-Hill Hypothesis explains fireball propulsion (inertialess negative gravity) and also the Flatwoods event of September 12, 1952. A witness, Sagan publishes his interviews with other witnesses and speculates that machine intelligences hide inside comet belts. Sagan explores atmospheric physics, lightning, network analysis, quantum physics, the EPR Paradox, Wolfram computation, MONDs, WIMPs, Multiverse Theory, chaoplexity, M-Theory and more. Sagan illuminates the profound changes necessary for post-modern physics to accommodate something that is foreign to our current physics. Written for the intelligent reader, this book's remarkable clarity and minimum of mathematical notation make it accessible to both the scientist and casual reader.