What he discovered surprised even him, and made him a media sensation.     Shoalts was no stranger to the wilderness. He had hacked his way through jungles and muskeg, had stared down polar bears and climbed mountains. But one spot on the map called out to him irresistibly: the Hudson Bay Lowlands, a trackless waste of muskeg and lonely rivers, moose and wolf, much bigger than the Amazon. Little of it has ever been explored.      Cutting through this forbidding landscape is a river no hunter, no explorer, no Native guide has left any record of paddling. It is far from any important waterways, even further from any arable land, and about as far from civilization as one can get. It was this river that Shoalts was obsessively determined to explore.      It took him several attempts, years of research, and two friendships that collapsed under the strain of Adam's single-minded thirst to explore this river. But finally, alone, he found the headwaters of the Again. He believed he had discovered what he had set out to find. But the adventure had just begun.     Paddling his way back to Hudson Bay, where a float plane would pick him up, Shoalts discovered something that seemingly shouldn't exist: a towering unmapped waterfall. He also discovered edenic islands, and braved rock-strewn rapids, but the waterfall captured both his imagination and the world's.     Adam did a single interview, with The Guardian, and once the story hit, he was a celebrity. He appeared on morning TV and was made the Explorer in Residence of the Canadian Geographic Society. What struck a chord with people was the realization that the world is bigger than we think. We assume that because we have mapped it from space, it must be exhaustively known. But it is wilder, stranger, less homogenous than we assume. We hardly know it. And, contrary to popular wisdom, it is certainly not flat. In other words, the age of exploration is not over.

    Below a certain temperature, death is inevitable. This book is about this aspect of our environment and about Sir Ranulph Fiennes' own life experiencing the extreme cold, from his adventuring apprenticeship 40 years ago on the Greenland Ice Cap to masterminding over the past 5 years the crossing of the Antarctic during winter; the 'coldest journey on Earth', where temperatures will regularly plummet to minus 92ºC. Cold has altered history on many great occasions. Hannibal crossed the high Alps under conditions of extreme cold; soldiers of the mighty armies of Hitler and Napoleon died in their thousands on the frozen Russian steppes from frostbite gangrene. In the past 150 years men and women have also seen the cold as a natural challenge as adventurers and explorers from all over the world have attempted to conquer the coldest regions of the globe. Today, parts of the world subject to extreme cold are the focus of intense geopolitical pressure, as President Putin claims Arctic coastal waters to be Russian, in readiness for the predicted melting of sea-ice, sending submarines to plant Russian flags on the seabed as a warning to would-be non-Russian mineral prospectors, and similar claims are made on the Antarctic. And yet a few degrees of climate change in Antarctica could easily trigger the detachment of huge ice sheets which would slide into the Southern Ocean. As sea levels rise some of the biggest coastal cities in the world would be submerged - a catastrophe that would render insignificant the most devastating of past tsunamis. Sir Ranulph Fiennes has spent a lifetime working in conditions of extreme cold - his frostbitten fingers are a testament to the horrors that man can experience in such temperatures, but he also knows that the life he has led owes a great deal to the cold. Both scientifically rigorous, historically questioning and intensely personal, this book is both a warning of the dangers we face with our relationship to the cold and celebration of a life lived in some of the extremist temperatures known to man.

    But, after a broken engagement and a broken heart, he desperately needed a change of scenery. The ambitious plan he cooked up went a bit overboard in that department; Knighton set out to visit every single one of America's National Parks, from Acadia to Zion. Leave Only Footprints is the memoir of his year spent traveling across the United States, a journey that yielded his "On the Trail" series, which quickly became one of CBS Sunday Morning's most beloved segments. In this smart, informative, and often hilarious book, he'll share how his journey through these natural wonders, unchanged by man, ended up changing his worldview on everything from God to politics to love and technology. Whether it's waking up early for a naked scrub in an Arkansas bathhouse or staying up late to stargaze along our loneliest highway, Knighton goes behind the scenery to provide an unfiltered look at America. In the tradition of books like A Walk in the Woods or Turn Right at Machu Picchu, this is an irresistible mix of personal narrative and travelogue-some well-placed pop culture references, too-and a must-read for any of the 331 million yearly National Parks visitors.