Martin Sixsmith examines the government's plan for a national 'happiness index'.
3/6 Students from the University of Bedfordshire take on their professors in the upbeat quiz.
Tim Hayward looks at the religious groups that produce food and drink. (R)
Sarfraz Manzoor explores a fascinating period of jazz music history in India.
3/6 Aleks Krotoski explores the anatomy of a rumour.
John Wilson talks to Claude-Michel Schönberg and Alain Boublil about writing Miss Saigon.
An examination of the causes of the dramatic fall in crime over the last 20 years.
Shilpa Kannan investigates the phenomenon of paid news in India. (R)
Is prolonged sitting bad for us? Chris Bowlby gets up from his desk to find out. (R)
Anne McElvoy looks to the future with James Lovelock, Joanna Haigh and George Monbiot. (R)