Water companies let waste disposers, for cash, dump their loads into sewage farms. When it is recklessly used as fertiliser, we are all at riskIf humanity has an epitaph, it might read something like this: “Knackered by the things we missed.” It is true that several existential threats are widel y known and widely discussed. But some of the greatest dangers we face appear on almost no one’s radar.How often have you thought about this one: spreading sewage sludge on farmland? I would guess very few would include it in their top civilisational hazards. Despite the best efforts of a handful of us, it trundles on, unknown to most. Surprising as it may seem, new research suggests that it could help call time on us.George Monbiot is a Guardian columnist Continue reading... ...read more read less