MindHow the science of happiness became an industry worth billionsFuelled by government and corporate dollars, being happy has become near mandatory. A controversial new book, Manufacturing Happy Citizens, explains the rise of positive psychologyCulture
LifeMacaques really can use logical reasoning to solve puzzles Macaques are good puzzle solvers, but it was unclear if they use logic or just made choices to maximise their reward. Now a test shows logic really is involved News