Deborah Orr: The angry arguments against David Cameron's opt-in filter proposals seem to imply that it's normal to want access to porn, and abnormal not to want access to porn
Gary Nunn: I'm British and gay – which forbids me to give blood in Australia. Safety of blood supply is paramount, but to 'defer' gay men is discriminatory and demeaning
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