Let’s talk about sex

As government experts recommend that all schoolchildren should receive sex education from the age of five, three people with a personal interest give their opinions. Interviews by Denis Campbell.

How the drugs giant and a lone academic went to war

Worrying power games are at the heart of Procter and Gamble's relationship with academics, alleges the scientist investigating its billlion-dollar osteoporosis treatment, reports Jo Revill.

Sex lessons planned for all children

· Five-year-olds to get lessons on emotional life · Leak reveals teenagers' ignorance and confusion.

Let’s end the sham debate about MMR right here

Michael Fitzpatrick: The divergence between scientific and public opinion is the key to the dogged persistence of the autism controversy.

Bill Gates gives $258m to world battle against malaria

Microsoft billionaire Bill Gates last night gave $258m (£145m) to the fight against malaria, branding the rich world's efforts in tackling the disease "a disgrace".