Richard Dawkins, Ricky Gervais, Dara O'Briain, Tim Minchin, Ann Druyan, Simon Singh, Marcus Brigstocke, Stephen Fry and a host of other atheist angels speak up for their scientific saviour in our 24-bite-sized podcasts
Moons and Junes, hearts, diamonds and red, red roses – this Valentine's Day, what could be more humanist than passionate romance? But, warns Sally Feldman, it may also be a dangerous delusion