"Worship Space Acoustics: 3 Decades of Design is a beautiful collection of recent work. This is a comprehensive compendium that far surpasses previous publications in the field in its depth, design, and information. Worship spaces of all major U.S. religions are covered. This book should be an obligatory reference for any consultant involved in church architecture and acoustics." -Mendel Kleiner, author of Worship Space Acoustics, Acoustics: Information and Communication Series (J. Ross Publishing 2010) "All involved in their design will appreciate this presentation of recent rooms for religious worship." -Leo L. Beranek, author of Concert Halls and Opera Houses: Music, Acoustics, and Architecture (Springer-Verlag 2004) "Through descriptions, photos, drawings, and acoustical data, this book provides valuable information on existing worship spaces designed during the past thirty years. This very well-edited book, including the Editors' Preface and six excellent essays from key people involved in worship space design, provides valuable information and ideas on the aesthetic, acoustic, and liturgical design of worship spaces for a number of faiths and in several countries." -Robert Coffeen, principle at R. C. Coffeen, Consultant in Acoustics LLC, Lawrence, Kansas This book takes the reader on a wide-ranging tour through churches, synagogues, mosques, and other worship spaces designed during the past 30 years. The book begins with a series of essays on topics ranging from the soundscape of worship spaces to ecclesiastical design at the turn of the 21st Century. Perspective pieces from an architect, audio designer, music director, and worship space owner are also included. The core of the book presents the acoustical and architectural design of a wide variety of individual worship space venues. Acoustical consulting firms, architects, and worship space designers from across the world contributed their recent innovative works in the area of worship space acoustics. The contributions include detailed renderings and architectural drawings, as well as informative acoustic data graphs and evocative descriptions of the spaces. Filled with beautiful photography and fascinating modern design, this book is a must-read for anyone interested in religious architecture, acoustical design, or musical performance.

The most iconic planes of WWII, the Supermarine Spitfire, Hawker Hurricane, DeHavilland Mosquito and the Avro Lancaster, were all powered by one engine, the Rolls-Royce Merlin. The story of the Merlin is one of British ingenuity at its height, of artistry and problem-solving that resulted in a war-winning design. Published to coincide with the 75th anniversary of VE Day and the 80th anniversary of the start of the Battle of Britain, Merlin is the extraordinary story of the development of the Rolls-Royce engine that would stop Hitler from invading Britain and carry the war to the very heart of Germany. The story of the Merlin engine encompasses the history of powered flight, from the ingenuity of the Wright Brothers to the horrors of World War I, and from the first crossing of the Atlantic to the heady days of flying in the 1920s. There is also the extraordinary story of the Schneider Trophy - an international contest wherein nations poised on the precipice of war competed for engineering excellence in the name of progress. And at the heart of this story are the glamourous lives of the pilots, many of whom died in their pursuit of speed; the engineers, like Henry Royce of Rolls-Royce, who sketched the engine that would win WWII in the sand of his local beach; and perhaps most importantly the Lady Lucy Houston who after the Wall Street Crash singlehandedly funded the development of the engine and the iconic Spitfire. Never was so much owed by so many to so few - and without the Rolls-Royce Merlin engine, the few would have been powerless.

The second edition of Wastewater and Biosolids Management has 40% new material including a comprehensive study guide and one new chapter entitled 'The contribution of Decision Support System (DSS) to the approach of safe wastewater and biosolid reuse'. The study guide contains the title of the chapter, the purpose, the expected results, key concepts, study plan, additional bibliography, and a set of self-assessment exercises and activities. The book covers a wide range of current, new and emerging topics in wastewater and biosolids. It addresses the theoretical and practical aspect of the reuse and looks to advance our knowledge on wastewater reuse and its application in agricultural production. The book aims to present existing modern information about wastewater reuse management based on earlier literature on the one hand and recent research developments, many of which have not so far been implemented into actual practice on the other. It combines the practical and theoretical knowledge about 'wastewater and biosolids management' and in this sense it is useful for researchers, students, academics as well as professionals.

Neural Approximations for Optimal Control and Decision provides a comprehensive methodology for the approximate solution of functional optimization problems using neural networks and other nonlinear approximators where the use of traditional optimal control tools is prohibited by complicating factors like non-Gaussian noise, strong nonlinearities, large dimension of state and control vectors, etc. Features of the text include: * a general functional optimization framework; * thorough illustration of recent theoretical insights into the approximate solutions of complex functional optimization problems; * comparison of classical and neural-network based methods of approximate solution; * bounds to the errors of approximate solutions; * solution algorithms for optimal control and decision in deterministic or stochastic environments with perfect or imperfect state measurements over a finite or infinite time horizon and with one decision maker or several; * applications of current interest: routing in communications networks, traffic control, water resource management, etc.; and * numerous, numerically detailed examples. The authors' diverse backgrounds in systems and control theory, approximation theory, machine learning, and operations research lend the book a range of expertise and subject matter appealing to academics and graduate students in any of those disciplines together with computer science and other areas of engineering.

Whispers from the depths is more than just the story of the building of the Kariba Dam in the mid-1950s. Built in just five years against overwhelming odds, the dam is a monument to engineering excellence. Shrouded in political undertones, the construction of the dam was vital for the hydro-electric power it would provide for Zambia’s burgeoning copper industry. Little thought, however, appears to have been given to the future of the human and animal populations who lived in the valley that would be inundated when the dam was completed. The question has to be asked: Was this awe-inspiring man-made creation achieved at too high a cost in terms of the human suffering and environmental devastation it caused? Central to the story of Kariba was the fate of the Tonga people who had for centuries lived in the Gwembe valley, due to be flooded when the sluice gates were finally closed to halt the flow of the mighty Zambezi River. Approximately 57 000 people were forced to move from their ancestral homes, abandoning family graves and spiritual sites to the depths of Kariba's water. They became a dispersed people who have never been able to reunite as a cohesive society, never again been able to live peacefully on the banks of the river which gave them life. Animals, too, perished in their thousands despite the gallant efforts of wildlife personnel who mounted a hastily planned rescue mission known as Operation Noah. Whispers from the depths gives a voice to the all but forgotten BaTonga. It celebrates their unique culture but deplores the price they paid for progress – a price from which they themselves derived no benefit whatsoever.

Written in line with the revised specifications, applicable for Scottish Vocational Qualifications, and specially engineered around your candidates' needs and abilities. Highly illustrated chapters and clear, straightforward language means that candidates are kept engaged and can access the information they need quickly. Real-work focus in the handbooks fuels candidates' aspirations, helping them to put their learning into the context of real working scenarios. Concentrates on the key content at this level to help learners progress within the industry. Assessment guidance features throughout offer advice on how to prepare for assessment, and how candidates can achieve their best. Progress checks at the end of each learning outcome and end of unit help learners consolidate their knowledge.

'Thrilling ... High-definition history: tight, thrilling and beautifully researched' SUNDAY TIMES 'This book is a triumph' DAN SNOW 9.07 a.m., April 12, 1961. A top-secret rocket site in the USSR. A young Russian sits inside a tiny capsule on top of the Soviet Union's most powerful intercontinental ballistic missile - originally designed to carry a nuclear warhead - and blasts into the skies. His name is Yuri Gagarin and he is about to make history. Travelling at almost 18,000 miles per hour - ten times faster than a rifle bullet - Gagarin circles the globe in just 106 minutes. While his launch begins in total secrecy, within hours of his landing he has become a world celebrity - the first human to leave the planet. Beyond tells the thrilling story behind that epic flight on its sixtieth anniversary. It happened at the height of the Cold War as the US and USSR confronted each other across an Iron Curtain. Both superpowers took enormous risks to get a man into space first - the Americans in the full glare of the media, the Soviets under deep cover. Both trained their teams of astronauts to the edges of the endurable. In the end the race between them would come down to the wire. Drawing on extensive original research and the vivid testimonies of eyewitnesses, many of whom have never spoken before, Stephen Walker unpacks secrets that were hidden for decades and takes the reader into the drama - featuring the scientists, engineers and political leaders on both sides, and above all the American astronauts and their Soviet rivals battling for supremacy in the heavens.

Offers a complete update and revision to the manual for agriculture, geography, and rural studies The 21st edition of the quintessential reference book on agriculture is filled with updated and new material that provides those in the farming profession with everything they need to know about today's agricultural industry. Filled with contributions from top experts in the field, it provides not only the scientific explanations behind agriculture, but also a range of further reading . The Agricultural Notebook, 21st Edition features new chapters that address wildlife, the fundamentals of agricultural production, and the modern techniques critical to the industry. It offers new chapters on sheep, goats, ruminant nutrition, monogastric nutrition, and resource management. It also takes a more in-depth approach to plant nutrition, and greater attention to environmental elements. Other topics covered include: soil management & crop nutrition; animal welfare; crop physiology; farm woodland management; farm machinery; and more. - Reflects recent changes in the world of agriculture, farming, and the rural environment - Features a new chapter on Resource Management - Offers separate chapters on goats, sheep, and applied nutrition - Every chapter is revised by experts in their subject area The Agricultural Notebook is an essential purchase for all students of agriculture, countryside, and rural studies. It will also greatly benefit farmers, land agents, agricultural scientists, advisers, and suppliers to the agriculture industry.

'Engaging, authoritative and very timely. Marco Alvera spells Hydrogen's critical role as an energy store in the clean power transition' - Mike Berners-Lee, author of THERE IS NO PLANET B Picture this: It's 2050. The looming shadow of climate change is finally receding. The planet's temperature is stabilising. Rainforests and coral reefs beginning to thrive once more. We are returning to equilibrium with nature. This isn't wishful thinking; it can be our reality. We just need to embrace hydrogen: the missing link. The beauty of hydrogen is its simplicity. It's simple to make, and simple to use. You are essentially bottling sunlight from renewable energy sources in the form of hydrogen, and using it to bring clean energy to every corner of the globe. The best part about hydrogen is that when you use it, the only by-product is water. As energy expert Marco Alvera explains, if we're going to heal the climate, we need to start thinking big. This book is the blueprint for how to get us there. Whether you are a policy maker, a business person, an activist, or simply curious, the message is this: there is hope, for us and our planet. Hydrogen can help save the world.

Automation is undergoing a major transformation in scope and dimension and plays an increasingly important role in the global economy and in our daily lives. Engineers combine automated devices with mathematical and organizational tools to create complex systems for a rapidly expanding range of applications and human activities. The Springer Handbook of Automation incorporates these new developments and presents a widespread and well-structured conglomeration of new emerging application areas of automation. Besides manufacturing as a primary application of automation, the handbook contains new application areas such as medical systems and health, transportation, security and maintenance, service, construction and retail as well as production or logistics. This Springer Handbook is not only an ideal resource for automation experts but also for people new to this expanding field such as engineers, computer scientists, designers. It is edited by an internationally renowned and experienced expert.

Chapters in Part A explain the significant influence of automation on our life, on individuals, organizations, and society, in economic terms and context, and impacts of precision, accuracy and reliability with automatic and automated equipment and operations. The theoretical and scientific knowledge about the human role in automation is covered in Part B from the human-oriented and human-centered aspects of automation to be applied and operated by humans, to the human role as supervisor and intelligent controller of automation systems and platforms. This part concludes with analysis and discussion on the limits of automation to the best of our current understanding. Covering automation design from theory to building automation machines, systems, and systems-of-systems, Part C explains the fundamental elements of mechatronics, sensors, robots, and other components useful for automation, and how they are combined with control and automation software, including models and techniques for automation software engineering, and the automation of the design process itself. Chapters in Part D cover the basic design requirements for the automation and illustrate examples of how the challenging issues can be solved for the deign and integration of automation with respect to its main purpose: Continuous and discrete processes and industries, design techniques, criteria and algorithms for flow lines, and integrated automation. Concluding this part is the design for safety of automation, and of automation for safety. The main aspects of automation management are covered by the chapters in Part E: Cost effectiveness and economic reasons for the design, feasibility analysis, implementation, rationalization, use, and maintenance of particular automation; performance and functionality measures and criteria. Related also are the issues of how to manage automatically and control maintenance, replacement, and upgrading. Part F, industrial automation, begins with explanation of machine tool automation, including various types of numerical control (NC), flexible, and precision machinery for production, manufacturing, and assembly, digital and virtual industrial production, to detailed design, guidelines and application of automation in the principal industries, from aerospace and automotive to semi-conductor, mining, food, paper and wood industries. Chapters are also devoted to the design, control and operation of functions common to all industrial automation. Infrastructures and service automation are covered in Part G and it is explained how automation is designed, selected, integrated, justified and applied, its challenges and emerging trends in those areas and in the construction of structures, roads and bridges; of smart buildings, smart roads and intelligent vehicles; cleaning of surfaces, tunnels and sewers; land, air, and space transportation; information, knowledge, learning, training, and library services; and in sports and entertainment. Automation in medical and healthcare systems is covered in Part H and shows the exponential penetration and main contributions of automation to the health and medical well being of individuals and societies. First, the scientific and theoretical foundations of control and automation in biological and biomedical systems and mechanisms are explained, then specific areas are described and analyzed. Available, proven, and emerging automation techniques in healthcare delivery and elimination of hospital and other medical errors are also addressed. Finally, Part I, Home, Office, and Enterprise Automation is about functional automation areas at home, in the office, and in general enterprises, including multi-enterprise networks. Chapters also cover the automation theories, techniques and practice, design, operation, challenges and emerging trends in education and learning, banking, commerce. An important dimension of the material compiled for this part is that it is useful for all other functional areas of automation. The concluding part of this Springer Handbook contains figures and tables with statistical information and summaries about automation applications and impacts in four main areas: industrial automation, service automation, healthcare automation, and financial and e-commerce automation. A rich list of associations and of periodical publications around the world that focus on automation in its variety of related fields is also included for the benefit of readers worldwide.

Throughout the 94 chapters, divided into ten main parts, with 124 tables, 1005 figures, the 168 co-authors present proven knowledge, original analysis, best practices and authoritative expertise.

Plenty of case studies, creative examples and unique illustrations, covering topics of automation from the basics and fundamentals to advanced techniques, cases and theories will serve the readers and benefit the students and researchers, engineers and managers, inventors, investors and developers.

'Endlessly insightful and full of surprises - exactly what you would expect from Tim Harford' BILL BRYSON 'Entertaining . . . A lively introduction to some of the most ingenious, yet often overlooked inventions that have changed the way we live' The Times 'Every Tim Harford book is cause for celebration' MALCOLM GLADWELL 'Harford is a fine, perceptive writer, and an effortless explainer of tricky concepts. His book teems with good things, and will expand the mind of anyone lucky enough to read it' Daily Mail In Fifty Things that Made the Modern Economy, the revolutionary, acclaimed book, radio series and podcast, bestselling economist Tim Harford introduced us to a selection of fifty radical inventions that changed the world. Now, in this new book, Harford once again brings us an array of remarkable, memorable, curious and often unexpected 'things' - inventions that teach us lessons by turns intimate and sweeping about the complex world economy we live in today. From the brick, blockchain and the bicycle to fire, the factory and fundraising, and from solar PV and the pencil to the postage stamp, this brilliant and enlightening collection resonates, fascinates and stimulates. It is a wonderful blend of insight and inspiration from one of Britain's finest non-fiction storytellers.

Erno Rubik - the inventor of the Rubik's Cube - inspires us with what he's learned in a lifetime of creating, curiosity and discovery. Erno Rubik was a child when he first became obsessed with puzzles of all kinds. 'Puzzles', he writes, 'bring out important qualities in each of us: concentration, curiosity, a sense of play, the eagerness to discover a solution'. To Rubik puzzles aren't just games - they're creativity machines. He encourages us to embrace our inner curiosity and find the puzzles that surround us in our everyday lives. Rubik's own puzzle, the Cube, went on to be solved by millions worldwide for over forty years, becoming one of the bestselling toys of all time and a global symbol of intelligence and ingenuity. In CUBED, Rubik covers more than just his journey to inventing his eponymous cube. He makes a case for the importance of being an amateur - as he has always considered himself. He discusses the inevitability of problems during any act of invention. He reveals what it was like to experience the astonishing worldwide success of an object he made purely for his own play. And he offers what he thinks it means to be a true creator (hint: anyone can do it). Steeped in the wisdom and also the humility of a born inventor, CUBED offers a unique look at the imperfect science of creation.

Principles and farm-tested practices for no-dig market gardening-for healthier, more productive soil! From the host of the popular The No-Till Market Garden Podcast - heard around the world with nearly one million downloads! Discovering how to meet the soil's needs is the key task for every market gardener. In this comprehensive guide, Farmer Jesse Frost shares all he has learned through experience and experimentation with no-till practices on his home farm and from interviews and visits with highly successful market gardeners in his role as host of The No-Till Market Garden Podcast. The Living Soil Handbook is centred around the three basic principles of no-dig market gardening: Disturb the soil as little as possible Keep it covered as much as possible Keep it planted as much as possible. Farmer Jesse then guides readers in applying those principles to their own garden environment, with their own materials, to meet their own goals. Beginning with an exploration of the importance of photosynthesis to living soil, Jesse provides in-depth information on: Turning over beds Using compost and mulch Path management Incorporating biology, maintaining fertility Cover cropping Diversifying plantings through intercropping Production methods for seven major crops Throughout, the book emphasises practical information on all the best tools and practices for growers who want to build their livelihood around maximising soil health. Farmer Jesse does not believe that growers should anguish over what does and does not qualify as "no-dig." If you are using a tool to promote soil life and biology, that's the goal. The Living Soil Handbook blends the idea of meeting the soil's needs with the realities of making a living as a professional grower, no matter where you live.

A handy, splash-proof, on-the-water summary of the key things you need to know about navigation at sea: the perfect quick reference guide to keep onboard. The book covers all the navigation essentials: charts, compass, tides, standard and secondary ports, dead reckoning, estimated position, course to steer, lights, GPS, waypoints and buoyage in a highly illustrated format making it easy to understand at a glance - ideal for those moments when you need an answer, and you need it fast! Spiral bound, this little companion stands up to frequent use and serves as a great aide-memoire.

Set in the gorgeous, sprawling countryside of the Pacific Northwest, Eileen Garvin's THE MUSIC OF BEES is about finding friendship in the most unlikely of places, and the families we choose for ourselves. Heartwarming, inspirational and redemptive, it is perfect for fans of THE LANGUAGE OF FLOWERS and Rachel Joyce. After the sudden death of her husband, Alice Holtzman finds herself a social pariah. Unfashionable, middle-aged, childless, and with only 120,000 honeybees for company. On the other side of town, Jake Stevenson and his enormous blue mohawk had a bright future in front of them studying music, all until an accident at a high school party leaves him with a broken spine. But when Alice crashes her pick-up truck, packed with thousands of restless honeybees, into Jake, knocking him from his wheelchair, it is the start of an unlikely of friendship that will pull both of them through the darkest stages of their grief. As these new friends begin to heal one another, Alice realises that Jake has a gift - not only is he a natural with her bees, but he can hear their buzzing as a form of music. . . All seems right with their world - until the buzzing stops. With a pesticide company threatening the local honeybee population, and everything Alice and Jake have worked for, these friends must unite to defend their bees.

'Compelling, penetrating, devastating - Silent Earth is a wake-up call for the world.' Isabella Tree Insects are essential for life as we know it. As they become more scarce, our world will slowly grind to a halt; we simply cannot function without them. Drawing on the latest ground-breaking research and a lifetime's study, Dave Goulson reveals the shocking decline of insect populations that has taken place in recent decades, with potentially catastrophic consequences. He passionately argues that we must all learn to love, respect and care for our six-legged friends. Eye-opening, inspiring and riveting, Silent Earth is part love letter to the insect world, part elegy, part rousing manifesto for a greener planet. It is a call to arms for profound change at every level - in government policy, agriculture, industry and in our own homes and gardens. Although time is running out, it is not yet too late for insect populations to recover. We may feel helpless in the face of many of the environmental issues that loom on our horizon, but Goulson shows us how we can all take simple steps to encourage insects and counter their destruction.

Topological Phases of Matter are an exceptionally dynamic field of research: several of the most exciting recent experimental discoveries and conceptual advances in modern physics have originated in this field. These have generated new, topological, notions of order, interactions and excitations. This text provides an accessible, unified and comprehensive introduction to the phenomena surrounding topological matter, with detailed expositions of the underlying theoretical tools and conceptual framework, alongside accounts of the central experimental breakthroughs. Among the systems covered are topological insulators, magnets, semimetals, and superconductors. The emergence of new particles with remarkable properties such as fractional charge and statistics is discussed alongside possible applications such as fault-tolerant topological quantum computing. Suitable as a textbook for graduate or advanced undergraduate students, or as a reference for more experienced researchers, the book assumes little prior background, providing self-contained introductions to topics as varied as phase transitions, superconductivity, and localisation.

Respond to the call of ham radio Despite its old-school reputation, amateur radio is on the rise, and the airwaves are busier than ever. That's no surprise: being a ham is a lot of fun, providing an independent way to keep in touch with friends, family, and new acquaintances around the world--and even beyond with its ability to connect with the International Space Station! Hams are also good in a crisis, keeping communications alive and crackling during extreme weather events and loss of communications until regular systems like cell phones and the internet are restored. Additionally, it's enjoyable for good, old-fashioned tech geek reasons--fiddling with circuits and bouncing signals off the ionosphere just happens to give a lot of us a buzz! If one or more of these benefits is of interest to you, then good news: the new edition of Ham Radio For Dummies covers them all! In his signature friendly style, longtime ham Ward Silver (Call Sign NOAX)--contributing editor with the American Radio Relay League--patches you in on everything from getting the right equipment and building your station (it doesn't have to be expensive) to the intricacies of Morse code and Ohm's law. In addition, he coaches you on how to prepare for the FCC-mandated licensing exam and tunes you up for ultimate glory in the ham radio hall of fame as a Radiosport competitor! With this book, you'll learn to: Set up and organize your station Communicate with people around the world Prep for and pass the FCC exam Tune into the latest tech, such as digital mode operating Whether you're looking to join a public service club or want the latest tips on the cutting edge of ham technology, this is the perfect reference for newbies and experts alike--and will keep you happily hamming it up for years!

Economic issues arise in almost every water policy context. Water is of most concern when scarce, but physical scarcity is often overcome as human beings move water from place to place, sometimes creating monumental structures. The roles that cost and economic value play in water resource allocation are implicit, but often poorly understood. This second edition clarifies the role of economics and offers material that can be applied to water resource allocation problems around the world. Topics covered include: groundwater, floods and droughts, in situ uses of water, and institutions and law. New to the book is an exploration of water issues outside the United States as well as a new application of behavioral and experimental economics to the topic. A concise introduction to issues of water quality and quantity in both urban and agricultural settings, Water Resource Economics and Policy will be a valuable resource or text for students and researchers in the fields of agricultural economics, geography, law, and hydrology. Those involved in water resource agencies and private utilities will also find the book a useful reference. Acclaim for the first edition: 'This textbook is written for first-year graduate students and senior level undergraduates in economics. ... Graduate students in geography, water resources, and environmental management should also be interested. The well-done helpful diagrams and charts are those expected for a textbook in economics at this level. In every chapter many interesting real-world examples illustrate the concept being discussed. Some chapters have easy-to-read case studies set off from the text. ... I plan on keeping this excellent book as a shelf reference and would willingly adopt it for a class in water resource economics.' - Donald E. Agthe, Journal of the American Water Resources Association 'This is a much-needed book, which introduces the interested reader to the economics of water resource allocation, and analyzes relevant policy issues derived from all over the world. To the best of my knowledge, this is the first book which is focused on communicating the basic economic concepts that govern water resources allocation. ... The lively writing style of W. Douglass Shaw, which is enriched with excellent examples and case studies from various countries, makes this book an obvious choice for a textbook in relevant courses ... this excellent book should be a compulsory reading for all of us who work in the field of water resources management.' - Phoebe Koundouri, Ecological Economics

This resource covers all areas of interest for the practicing engineer as well as for the student at various levels and educational institutions. It features the work of authors from all over the world who have contributed their expertise and support the globally working engineer in finding a solution for today's mechanical engineering problems. Each subject is discussed in detail and supported by numerous figures and tables.

In 1981 the sudden collapse of two skywalks in Kansas City's Hyatt hotel killed 114 people and injured another 200. There never was a public trial, nor a full airing of everything that went wrong. Richard A. Serrano shared a Pulitzer Prize for his coverage of the disaster at the time; now he returns to the tragedy to learn all that went wrong, how it could have been avoided, and what lasting effects persist today-for engineering and the legal system, but most importantly those who suffered. Drawing on legal depositions, evidentiary material, and recollections from 240 survivors, first responders, and construction officials, Buried Truths and the Hyatt Skywalks is the story of this monumental catastrophe and what it teaches us today. The Friday evening Tea Dance was all the rage that summer of 1981. Each week the lobby filled with throngs of revelers, some celebrating atop the skywalks themselves. On July 17, without warning, the steel support systems buckled and the concrete and glass skywalks crashed onto the crowded lobby. The devastation reverberated far beyond the ruins. Firefighters, police officers, and paramedics suffered from deep depression, cycled through divorce, hit the bottle, and in some instances committed suicide. The hotel had been built using a new fast-track method with key construction decisions often made on the fly, including changing the skywalk design from six heavy hanger rods to twelve thinner poles. Within a year the skywalks were splintering inside. Even then the collapse could have been averted, but special inspection panels to check the hanging walkways were never opened. Though wholly avoidable, the Hyatt disaster did bring significant changes-some good and some problematic. Tougher industry guidelines were enforced for US construction projects. Police officers, firefighters, and health care workers are now treated for PTSD and other psychological trauma after working a tragic event. But the rush to settle all the Hyatt lawsuits helped usher in a controversial new era of nondisclosure agreements. Buried Truths and the Hyatt Skywalks explores America's worst structural engineering disaster. Though the world has moved on, survivors and witnesses still vividly recall that night. This is their story.