Make STD testing mandatory

Rosa Freedman: Legal and financial disincentives stop people getting checked. Compulsory testing would halt the spread of chlamydia and HIV

Oh happy days

It may look grim out there, but unemployment is down, days are getting longer – and Tony Blair is set to provide us with the best daytime TV ever. Tim Dowling brings us 25 reasons to be cheerful

Viagra: The profitable pill

Since its launch in 1998, Pfizer's treatment for erectile dysfunction has earned the company more than £1bn a year