In 1997, Tony Blair’s government inherited a problem: tuberculosis in cattle was rising, farmers were furious, and nobody agreed on whether badgers were responsible. The solution was to commission a gold-standard randomised control trial — 30 sites across the southwest of England, three conditions, run by an independent scientific group. Proper science. No cutting corners. Eleven years and £49 million later, the trial produced findings that made things more complicated, not less. Reactive cu...