Energy
Vaclav Smil
Crimes Against Humanity
Adam Jones
Oil
Vaclav Smil
The Palestine-Israeli Conflict
Dan Cohn-Sherbok & Dawoud El-Alami
Existentialism
Thomas E. Wartenberg
Epistemology
Robert M. Martin
Ethics
Peter Cave
Critical Thinking
Sharon M. Kaye
Astronomy
William H. Waller
Evolutionary Psychology
Robin Dunbar, John Lycett & Louise Barrett