I don’t think we really need a few guinea pigs to teach us about surface water. Most of us have learnt everything we need to know from three decades of TV adve

I don’t think we really need a few guinea pigs to teach us about surface water. Most of us have learnt everything we need to know from three decades of TV adverts begging us to send £2 a week to help dig wells in Africa. I’m fully in favour of people finding new and interesting ways to remove themselves from the genepool. But this is neither new nor interesting.