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🌊 Embark on a Journey to Earth's Primordial Past with "Life's Great Unfolding: The Cambrian Explosion’s Legacy" 🦠🌏 Dive deep into one of the most fascinating periods in Earth's history with this captivating eBook. Unravel the mysteries of the Cambrian Explosion, a transformative epoch over 500 million years ago that marked a significant turning point in the evolution of life. 🔍 Inside the Book: Pre-Cambrian Prelude: Explore the Earth before the dawn of the Cambrian period and understand the factors leading to this evolutionary milestone. Burst of Life: Witness the rapid emergence of diverse, complex life forms that define the Cambrian seas. Evolutionary Innovations: Discover how new body plans and structures emerged, shaping the future of all complex life. Fossil Chronicles: Traverse the globe to significant fossil sites that provide a window into this ancient world. Ecosystem Dynamics: Delve into the intricate predator-prey relationships and ecological networks of the Cambrian era. Iconic Cambrian Species: Meet the enigmatic creatures of this period, from the peculiar Anomalocaris to other remarkable species. Scientific Breakthroughs: Learn about the modern technological advances that have revolutionized our understanding of the Cambrian period. 📘 Ideal for: History buffs, science enthusiasts, and anyone intrigued by the origins and evolution of life on our planet. 🌐 Experience the Wonders: "The Cambrian Explosion’s Legacy" offers a comprehensive and engaging exploration of this pivotal period. Through vivid descriptions and insights, this book brings to life the extraordinary diversity and complexity of ancient marine ecosystems. 📚 Get Your Copy Today: Delve into the pages of this fascinating eBook and discover the lasting legacy of the Cambrian Explosion on the evolution of life on Earth. A must-read for anyone passionate about the wonders of our natural world!
*Includes pictures *Includes a bibliography for further reading The early history of Earth covers such vast stretches of time that years, centuries, and even millennia become virtually meaningless. Instead, paleontologists and scientists who study geochronology divide time into periods and eras. The current view of science is that Earth is around 4.6 billion years old, and the first 4 billion years of its development are known as the Precambrian period. For the first billion years or so, there was no life in Earth. Then the first single-celled life-forms, early bacteria and algae, began to emerge. It's unclear where they came from or even if they originated on this planet at all, but this gradual development continued until around four billion years ago when suddenly (in geological terms) more complex forms of life began to emerge. Scientists call this time of an explosion of new forms of life the Paleozoic Era, and it stretched from around 541-250 million years ago (Mya). In the oceans and then on land, new creatures and plants began to appear in bewildering variety, and by the end of this period, life on Earth had diversified into a myriad of complex forms that filled virtually every habitat and niche available in the seas and on the planet's only continent, Pangea. Despite all of the scientific advances made in the past few centuries, including an enhanced understanding of Earth's geological past, very little is known about the planet's early history. It is generally accepted that the planet formed somewhere in the region of 4.5 billion years ago, and at some point, the first life appeared in the form of tiny, single-celled creatures, but scientists are unsure of what this life looked like. One of the problems for those seeking to trace the history of life on Earth is that modern scholars are almost entirely dependent on fossil records, but the earliest types of life left few fossils. The best fossils are formed from the bones and hard body parts of dead creatures, but the earliest types of life were so small that they had no bones or cartilage and thus left no fossils. Thus, even though the Precambrian Period (4,600-541 millions of years ago (Mya)) covers over 80% of the entire history of the planet, scientists have very little idea of what forms of life existed then. Then, as Earth entered the Cambrian Period, there was a relatively sudden increase in life form diversity throughout the oceans. Completely new forms of life, more complex and more diverse than anything that had been seen before, began to spread. This acceleration in the evolution of new forms of life was so dramatic that this has come to be known as the "Cambrian explosion." Although new species in the Cambrian explosion developed almost entirely in the oceans, the land was not entirely devoid of life. Though there were no plants or animals, mats of cyanobacteria and other types of microbes covered large terrestrial areas. Scientists have discovered the tracks of a creature that were left in mud that existed 551 Mya, and those tracks were left by leg-like appendages. Was this a fish-like creature that temporarily invaded the land, or was it something completely different than anything that exists today? There is no general consensus, but the Cambrian Period left a rich fossil record that provides a clear idea of the development of life during this time. At the same time, new discoveries are continually being made, and the more scientists discover about this mysterious period, the more their understanding of ancient Earth changes. The Cambrian Period: The History and Legacy of the Start of Complex Life on Earth looks at the development of the era, the extinction event that preceded it, and how life began to evolve during it. Along with pictures depicting important people, places, and events, you will learn about the Cambrian Period like never before.
LIFE Magazine is the treasured photographic magazine that chronicled the 20th Century. It now lives on at LIFE.com, the largest, most amazing collection of professional photography on the internet. Users can browse, search and view photos of today’s people and events. They have free access to share, print and post images for personal use.
Knoll explores the deep history of life from its origins on a young planet to the incredible Cambrian explosion, with the very latest discoveries in paleontology integrated with emerging insights from molecular biology and earth system science. 100 illustrations.
"[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.
The Cambrian Period records one of the most extraordinary transitions in the history of life. Although animals may have first appeared nearly 700 million years ago, with the earliest sponges, their initial diversifications appear to have been modest until a richly diverse fossil fauna appeared abruptly about 170 million years later. In The Cambrian Explosion, Erwin and Valentine synthesize research from many fields to explain why there was such remarkable novelty of animal forms.
NATIONAL BESTSELLER • Bold futurist Ray Kurzweil, author of The Singularity Is Near, offers a framework for envisioning the future of machine intelligence—“a book for anyone who wonders where human technology is going next” (The New York Times Book Review). “Kurzweil offers a thought-provoking analysis of human and artificial intelligence and a unique look at a future in which the capabilities of the computer and the species that invented it grow ever closer.”—BILL GATES Imagine a world where the difference between man and machine blurs, where the line between humanity and technology fades, and where the soul and the silicon chip unite. This is not science fiction. This is the twenty-first century according to Ray Kurzweil, the “restless genius” (The Wall Street Journal), “ultimate thinking machine” (Forbes), and inventor of the most innovative and compelling technology of our era. In his inspired hands, life in the new millennium no longer seems daunting. Instead, it promises to be an age in which the marriage of human sensitivity and artificial intelligence fundamentally alters and improves the way we live. More than just a list of predictions, Kurzweil’s prophetic blueprint for the future guides us through the inexorable advances that will result in: • Computers exceeding the memory capacity and computational ability of the human brain (with human-level capabilities not far behind) • Relationships with automated personalities who will be our teachers, companions, and lovers • Information fed straight into our brains along direct neural pathways Eventually, the distinction between humans and computers will have become sufficiently blurred that when the machines claim to be conscious, we will believe them.
Since the advent of digitization, the conceptual confusion surrounding the semantic galaxy that comprises the media and journalism universes has increased. Journalism across several media platforms provides rapidly expanding content and audience engagement that assist in enhancing the journalistic experience. Exploring Transmedia Journalism in the Digital Age provides emerging research on multimedia journalism across various platforms and formats using digital technologies. While highlighting topics, such as immersive journalism, nonfictional narratives, and design practice, this book explores the theoretical and critical approaches to journalism through the lens of various technologies and media platforms. This book is an important resource for scholars, graduate and undergraduate students, and media professionals seeking current research on media expansion and participatory journalism.
This edition of "The Canadian Encyclopedia is the largest, most comprehensive book ever published in Canada for the general reader. It is COMPLETE: every aspect of Canada, from its rock formations to its rock bands, is represented here. It is UNABRIDGED: all of the information in the four red volumes of the famous 1988 edition is contained here in this single volume. It has been EXPANDED: since 1988 teams of researchers have been diligently fleshing out old entries and recording new ones; as a result, the text from 1988 has grown by 50% to over 4,000,000 words. It has been UPDATED: the researchers and contributors worked hard to make the information as current as possible. Other words apply to this extraordinary work of scholarship: AUTHORITATIVE, RELIABLE and READABLE. Every entry is compiled by an expert. Equally important, every entry is written for a Canadian reader, from the Canadian point of view. The finished work - many years in the making, and the equivalent of forty average-sized books - is an extraordinary storehouse of information about our country. This book deserves pride of place on the bookshelf in every Canadian Home. It is no accident that the cover of this book is based on the Canadian flag. For the proud truth is that this volume represents a great national achievement. From its formal inception in 1979, this encyclopedia has always represented a vote of faith in Canada; in Canada as a separate place whose natural worlds and whose peoples and their achievements deserve to be recorded and celebrated. At the start of a new century and a new millennium, in an increasingly borderless corporate world that seems ever more hostile to nationaldistinctions and aspirations, this "Canadian Encyclopedia is offered in a spirit of defiance and of faith in our future. The statistics behind this volume are staggering. The opening sixty pages list the 250 Consultants, the roughly 4,000 Contributors (all experts in the field they describe) and the scores of researchers, editors, typesetters, proofreaders and others who contributed their skills to this massive project. The 2,640 pages incorporate over 10,000 articles and over 4,000,000 words, making it the largest - some might say the greatest - Canadian book ever published. There are, of course, many special features. These include a map of Canada, a special page comparing the key statistics of the 23 major Canadian cities, maps of our cities, a variety of tables and photographs, and finely detailed illustrations of our wildlife, not to mention the colourful, informative endpapers. But above all the book is "encyclopedic" - which the "Canadian Oxford Dictionary describes as "embracing all branches of learning." This means that (with rare exceptions) there is satisfaction for the reader who seeks information on any Canadian subject. From the first entry "A mari usque ad mare - "from sea to sea" (which is Canada's motto, and a good description of this volume's range) to the "Zouaves (who mustered in Quebec to fight for the beleaguered Papacy) there is the required summary of information, clearly and accurately presented. For the browser the constant variety of entries and the lure of regular cross-references will provide hours of fasination. The word "encyclopedia" derives from Greek expressions alluding to a grand "circle of knowledge." Our knowledge has expandedimmeasurably since the time that one mnd could encompass all that was known.Yet now Canada's finest scientists, academics and specialists have distilled their knowledge of our country between the covers of one volume. The result is a book for every Canadian who values learning, and values Canada.