In 2006, 'outdoor philosopher' Kate Rawles cycled 4553 miles from Texas to Alaska, following the spine of the Rocky Mountains as closely as possible. Cycling across unforgiving but starkly beautiful landscapes - New Mexican deserts, over high mountain passes, across glaciers, and down to the sea - she encountered bears, wolves, moose, cliff-swallows, aspens, and a single, astonishing lynx. Along the way, she talked to Americans about climate change - from truck drivers to the Mayor of Albuquerque - to find out what they knew about it, whether they cared, and if they did, what they thought they could do. Kate's story of the trip, in which she not only deals with the rigours of the journey (cycling for ten hours a day in temperatures often in excess of 100F, fighting punctures, endless repairs, inescapable grinding fatigue - ) but does constant battle with her own ideas and assumptions, helps us to cross the great divide between where we are on climate change, and where we need to be. Can we tackle climate change while still keeping our modern Western lifestyles intact? Should we put biofuel in the camper vans and RVs?Or do we need much deeper shifts in lifestyles, values and worldviews?