There's one thing that Su Dike, a 22-year-old graduate student, is always on time for in summer – a storm! That's because he belongs to a group of dedicated "storm chasers" who've racked up some 60,000 kilometers, journeying up and down the country in pursuit of the nation's wildest weather. What's more, they're putting their passion to good use by allowing scientists, students and meteorological organizations across the country to access their films, photos and data – all for free!