In Void If Detached, Mark Green gives us a clear look at the way a man in his forties approaches his diagnosis of a rare form of brain cancer called anaplastic ependymoma. His diagnosis was later revised to glioblastoma, of which he said, "I had a golf ball in my head, and I'm not even very good at golf." Through five surgeries, and thirty-three radiation treatments and three years of constant chemotherapy, Mark channeled his thoughts into...