Acid mines and salmorejo: Earth Science adventures on the Rio Tinto

Sunday 6th April. 2am, North Haugh, St Andrews. I am herding a cohort of half asleep, half excited 3rd and 5th year students onto a dimly blue-lit coach headed for Edinburgh Airport and a dawn flight bound for Faro, Portugal. Thereafter, an onwards journey into Andalusia, southern Spain, alongside a couple of considerably more seasoned [...]