<p>Peter Murtagh decided it was time to embark on 'The Great Retirement Project' - riding a motorbike from Tierra Del Fuego at the very southern tip of South America, to the most northerly point in Alaska, alone and without the pressure of any deadline.<br>Aged 69, just him, a tent, a bike and a sleeping bag.<br>En route, Peter explored magical, wonderful and extraordinarily out-of-the-way parts of our bruised world, met incredible people from al...