Each year, 150,000 people hike Scotland’s Ben Nevis – a former volcano and Britain’s highest mountain, at 4,400ft above sea level. Many opt to take the so-called tourist trail, the rocky path which winds and zigzags its way to the summit. Few realise that this path was initially carved out in 1883 for a very unique scientific expedition. Even fewer know that now, more than a century later, this site is providing UK scientists with insights into climate change. Today, we have advanced weather forecast models – which are capable of using the kind of data taken at Ben Nevis...