Dubbed 'the mountain connoisseurs' walk', the Cambrian Way stretches 479km between the mighty castles of Cardiff in the south and Conwy on the north coast. Traversing the heartland of Wales, the challenging route crosses the Brecon Beacons, the Cambrian Mountains and Snowdonia, passing through two national parks and visiting many of the country's iconic summits, including Pen y Fan, Pumlumon, Cadair Idris and Snowdon itself. It can be walked in three weeks (or in shorter sections) and is suitable for experienced hillwalkers with sound navigational skills. The guide presents the route in 21 stages, offering comprehensive route description illustrated with OS 1:50,000 mapping and elevation profiles. Details of accommodation and facilities are provided, along with a helpful trek planner showing their distribution along the route: although the trail passes through remote areas, it is possible to stay under a roof every night - though camping is also a possibility, should you prefer. There are background notes on Wales's history and geology and local points of interest, and a glossary of Welsh place-names, useful contacts and accommodation listings can be found in the appendices. From the Black Mountains to the Rhinogau, Glyderau and Carneddau, the route takes in lofty ridges, striking peaks and picturesque lakes. There are also fascinating glimpses into the country's ancient and more recent past: Iron Age hillforts, Norman castles, a Cistercian abbey, the Chartist Cave and relics from the mining industry. Offering superlative scenery, the Cambrian Way is a celebration of some of the best mountain walking Wales has to offer and promises a unique opportunity to immerse yourself in these celebrated landscapes.

This guidebook describes the Snowdonia Way in Wales, a long-distance route through Eryri (Snowdonia) National Park from Machynlleth to Conwy. A low-level route of 97 miles (in 6 stages of between 13 and 21 miles) passes through the heart of Eryri's stunning mountain scenery and includes Pass of Aberglaslyn, Ogwen Valley and Aber Falls. It is suitable for walkers of average fitness and stamina, though the day stages are long. An alternative mountain route covers 122 miles in 9 stages of 12-18 miles, giving a spectacular journey over the most famous peaks such as Cadair Idris, Yr Wyddfa (Snowdon) and the Glyders. The high-level route is more physically challenging and requires good navigation skills. Full route descriptions for each stage are accompanied by OS maps and profiles. The guide also includes lists of accommodation and transport providers and a table of facilities to help with itinerary planning. Background notes on Eryri's geology, wildlife and history and extra information about features encountered along the way will help you discover more about this ancient and beautiful land.

This volume, aimed at the general reader, presents life and times of the amazing animals that inhabited Earth more than 500 million years ago. The Cambrian Period was a critical time in Earth’s history. During this immense span of time nearly every modern group of animals appeared. Although life had been around for more than 2 million millennia, Cambrian rocks preserve the record of the first appearance of complex animals with eyes, protective skeletons, antennae, and complex ecologies. Grazing, predation, and multi-tiered ecosystems with animals living in, on, or above the sea floor became common. The cascade of interaction led to an ever-increasing diversification of animal body types. By the end of the period, the ancestors of sponges, corals, jellyfish, worms, mollusks, brachiopods, arthropods, echinoderms, and vertebrates were all in place. The evidence of this Cambrian "explosion" is preserved in rocks all over the world, including North America, where the seemingly strange animals of the period are preserved in exquisite detail in deposits such as the Burgess Shale in British Columbia. Cambrian Ocean World tells the story of what is, for us, the most important period in our planet’s long history.

Until the mid-1980s, AI researchers assumed that an intelligent system doing high-level reasoning was necessary for the coupling of perception and action. In this traditional model, cognition mediates between perception and plans of action. Realizing that this core AI, as it was known, was illusory, Rodney A. Brooks turned the field of AI on its head by introducing the behavior-based approach to robotics. The cornerstone of behavior-based robotics is the realization that the coupling of perception and action gives rise to all the power of intelligence and that cognition is only in the eye of an observer. Behavior-based robotics has been the basis of successful applications in entertainment, service industries, agriculture, mining, and the home. It has given rise to both autonomous mobile robots and more recent humanoid robots such as Brooks' Cog. This book represents Brooks' initial formulation of and contributions to the development of the behavior-based approach to robotics. It presents all of the key philosophical and technical ideas that put this "bottom-up" approach at the forefront of current research in not only AI but all of cognitive science.

“A compulsive page-turner with shades of Donna Tartt’s The Secret History peopled by a new generation.”—Catherine Steadman, New York Times bestselling author of Something in the Water NAMED ONE OF THE BEST BOOKS OF THE YEAR BY GOOD HOUSEKEEPING In her first weeks at Hawthorne College, Malin is swept up into a tight-knit circle that will stick together through all four years. There’s Gemma, an insecure theater major from London; John, a tall, handsome, wealthy New Englander; Max, John’s cousin, a shy pre-med major; Khaled, a wisecracking prince from Abu Dhabi; and Ruby, a beautiful art history major. But Malin isn’t like the rest of her friends. She’s an expert at hiding her troubled past. She acts as if she shares the preoccupations of those around her—dating, partying—all while using her extraordinary insight to detect their deepest vulnerabilities and weaknesses. By Senior Day, on the cusp of graduation, Malin’s secrets—and those of her friends—are revealed. While she scrambles to maintain her artfully curated image, her missteps set in motion a devastating chain of events that ends in a murder. And as fragile relationships hang in the balance and close alliances shift, Malin must test the limits of what she’s capable of to stop the truth from coming out. In a mesmerizing novel that peels back the innumerable layers of a seductive protagonist, debut author Cambria Brockman brings to life an entrancing story of friendship, heartbreak, and betrayal. Praise for Tell Me Everything “Gripping . . . Brockman paints an unnerving portrait of the power people hold over one another—especially as they blur the line between protective and obsessive.”—Time “At once a complex thriller and antihero origin story, Cambria Brockman’s riveting debut is a true page-turner.”—Lisa Lutz, New York Times bestselling author of the Spellman series and The Passenger “Cambria Brockman’s dark and twisty Tell Me Everything is an impressive debut, a complicated and compelling novel of psychological suspense that deftly explores the questions of how well we know our friends and of whom we can trust.”—Karen Dionne, author of the international bestseller The Marsh King’s Daughter

The Cambrian radiation was the explosive evolution of marine life that started 550,000,000 years ago. It ranks as one of the most important episodes in Earth history. This key event in the history of life on our planet changed the marine biosphere and its sedimentary environment forever, requiring a complex interplay of wide-ranging biologic and nonbiologic processes. The Ecology of the Cambrian Radiationoffers a comprehensive and surprising picture of the Earth at that ancient time. The book contains contributions from thirty-three authors hailing from ten countries and will be of interest to paleontologists, geologists, biologists, and other researchers interested in the global Earth-life system.

"[An] extraordinary book. . . . Mr. Gould is an exceptional combination of scientist and science writer. . . . He is thus exceptionally well placed to tell these stories, and he tells them with fervor and intelligence."—James Gleick, New York Times Book Review High in the Canadian Rockies is a small limestone quarry formed 530 million years ago called the Burgess Shale. It hold the remains of an ancient sea where dozens of strange creatures lived—a forgotten corner of evolution preserved in awesome detail. In this book Stephen Jay Gould explores what the Burgess Shale tells us about evolution and the nature of history.