Making young women researchers, not just research subjects, was the key to uncovering their real concerns and beginning behaviour change in one Tanzanian district, writes Jennifer McCleary-Sills
Bella Mackie:Comment of the week: This week, Ally Fogg explains why he chose a moving comment from DorianHawksmoon about being a man who cries 'too much'
Emma Sturgess: Concerns about hidden salt levels in biscuits are well founded, but conspicuous consumption in the form of salted caramels has won over fans from Nigella Lawson to Barack Obama