Dialogues and Letters -- Seneca Once a Hero -- Elizabeth Moon Shaman -- Kim Stanley Robinson Probably Approximately Correct -- Leslie Valiant Collision Cour

Dialogues and Letters -- Seneca Once a Hero -- Elizabeth Moon Shaman -- Kim Stanley Robinson Probably Approximately Correct -- Leslie Valiant Collision Course: Endless Growth on a Finite Planet -- Kerryn Higgs Prosperity Without Growth -- Tim Jackson