What should we be worried about? : real scenarios that keep scientists up at night - Brockman, John, 1941-; Pinker, Steven, 1954-; Vinge, Vernor; Rees, Martin J., 1942-; Dennett, Daniel C. (Daniel Clement), 1910-1947; Dyson, George, 1953-; Nesse, Randolph M.; Sumner, Seirian; Hannay, Timo; Tegmark, Max; Sterling, Bruce (Harper Perennial, 2014)