Bryan Smith

It’s a route that you cannot climb in summer and that you don’t really want to climb in winter: Helmcken Falls. But ice-climber Will Gadd knows that the technically challenging mixed route on the rear wall of the 141-metre waterfall can only be mastered at sub-zero temperatures, because that’s when the loose rock is literally frozen up by the spray. However, what works for the route doesn’t necessarily help the athlete. The centimetre-thick layer of ice which Will has to remove from his safety rope at regular intervals doesn’t really make it easier for him to warm up to the route.

An edge-of-your-seat view into the lives of everyday heroes committed to one of America's noblest professions. For the firefighters, rescue squad and paramedics of Chicago Firehouse 51, no occupation is more stressful or dangerous, yet so rewarding and exhilarating. These courageous men and women are among the elite who forge headfirst into danger when everyone else is running the other way and whose actions make the difference between life and death.