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
TechnologyThe best sci-fi books put humanity at the heart of their writingScience fiction books like ZED and This Is How You Lose the Time War use exhilarating writing to create worlds that seem eerily similar to ours, says Helen Marshall in her monthly sci-fi columnCulture