Wat Moet Ons Met Ons Kerk Doen? is 'n poging om te probeer verstaan waar ons as Afrikaners teologies vandaan kom, watter kragte en magte ons en ons Kerk gevorm het en hoe ons Kerk tans daar uitsien.

Die N.G.Kerk was 'n belangrike en rigtinggewende rolspele in die opheffing van die Afrikaner na die Britse vergrype tydens en na die Tweede Vryheidsoorlog. Tans word die N.G.Kerk ervaar as 'n instansie wat ongevoelig teenoor die geestelike behoeftes van haar lidmate staan.

Hierdie is 'n moet-lees boek vir:

• Lidmate wat ons Kerk graag wil help om 'n gesonde, geestelike tuiste vir Suid-Afrikaners van die 21ste eeu te bied.
• Die klakkelose napraters van die dogma wat dink ons Kerk is steeds op die regte pad.
• Die plastiekpredikante van die radio en televisie wat met eentonige reëlmaat soetsappige, sogenaamd godsdienstige, pleisters plak.
• Diegene wat reeds ons Kerk tot die ashoop van die geloof verdoem het.

Published annually, Sky Guide Southern Africa  is a practical resource for all stargazers, whether novice, amateur or professional. It highlights the cosmic events for each month of the upcoming year, including planetary movements, predicted eclipses and meteor showers.
 
Star charts plot the evening sky for each season, facilitating the identification of stars and constellations. The guide contains a wealth of information about the Sun, Moon, planets, comets, meteors and bright stars, and includes photos, diagrams, charts and images.
 
The most trusted guide to the southern skies.

Shall we take an umbrella... or evacuate the city? The Weather Machine is about a miraculous-but-overlooked invention that helps us through our daily lives - and sometimes saves them - by allowing us to see into the future.

When Superstorm Sandy hit North America, weather scientists had predicted its arrival a full eight days beforehand, saving countless lives and astonishing us with their capability. Their skill is unprecedented in human history and draws on nearly every major invention of the last two centuries: Newtonian physics, telecommunications, spaceflight and super-computing.

In this gripping investigation, Andrew Blum takes us on a global journey to explain this awe-inspiring feat - from satellites circling the Earth, to weather stations far out in the ocean, through some of the most ingenious minds and advanced algorithms at work today. Our destination: the simulated models they have constructed of our planet, which spin faster than time, turning chaos into prediction, offering glimpses of our future with eery precision.

This collaborative invention spans the Earth and relies on continuous co-operation between all nations - a triumph of human ingenuity and diplomacy we too often shrug off as a tool for choosing the right footwear each morning. But in this new era of extreme weather, we may come to rely on its maintenance and survival for our own.

In general, lives of noteworthy accomplishment are led by people with an obvious talent, or more than one. Occasionally, though, someone with no discernible gift whatsoever may distinguish him or herself with a remarkable life. Such cases invite the question of how? How did it happen? With age I have realised that mine is such a life, and, inevitably, I have asked that question. It may happen in cases like this that, as one searches for an answer, one looks for precedents: or even for gifts not inherent in oneself but from outside. I did neither: it came to me unbidden. As I sang, the lines in the hymn resonated so powerfully I could not get away from them: ‘As noiseless let Thy blessings fall as fell Thy manna down.’ That was it. Unobtrusively I had been blessed – again and again and again.

A dozy, unsocialised child follows a boringly ordinary course through life until gradually things start to work out for him in increasingly extraordinary ways. The only prize I ever won at school was the Natural History Prize, no academic accolades or colours for any sport. I was rewarded for loving undemanding nature; almost a non-prize. Nearly fifty years later, in a small town I had never visited before I was introduced to the author of a slim volume on the geography of the area. “Not THE Nick Norman,” she asked. I might have blushed. In 1987, aged 42 I had married, and gone on to father two children, one now a top lawyer, the other on a similar trajectory in medicine. Having dreamt of being a farmer, I owned a farm in Franschhoek, which put me in about the most envied group of people in South Africa. After a successful career in mineral exploration in Africa and South America I turned my hand to writing about geology in a way accessible to lay readers. Three best-sellers followed. The Red Sea opened up and the River Jordan stopped flowing, for the Israelites to reach their land of milk and honey. In between, though, there were 40 years in the wilderness.

This is my narrative. Yours will be different. Unpack it and you will find blessing after blessing. See how I found mine.

Adventures in Volcanoland charts journeys across deserts, through jungles and up ice caps, to some of the world's most important volcanoes, from Nicaragua to Hawaii, Santorini to Ethiopia, exploring Tamsin Mather's obsession with these momentous geological formations, the cultural and religious roles they have played in the minds of those living around them at different times throughout history, and the science behind their formation and eruptions.

Volcanoes help to make and shape our world, bursting forth from inside of the earth and, in many places, looming over us. Present since the earth's beginning they continue to maintain its life support systems and, their extraordinary chemistry may even have created the ingredients needed for life to kick start.

In some places volcanoes are even beginning to provide us with part of the energy we need to curb our use of fossil fuels. They have fascinated humans for millennia, their eruptions charted throughout history, seeming to show us how the earth has been living, breathing and changing for billions of years.

Why exactly are these geological mammoths found where they are? What can they teach us about our environment, the Anthropocene and the ecological disaster that is climate change? Are there volcanoes on other planets, and what might they tell us about whether we could one day live there if we exhaust our own habitat? How can we predict if or when volcanoes might explode?

Adventures in Volcanoland is an enthralling mix of travel, science and environmental writing for fans of Robert MacFarlane and Raynor Winn.

11 June, 1930. On a ship floating near Nonsuch Island, a curious steel ball is lowered 3,000 feet into the sea. Crumpled inside, the famed zoologist William Beebe gazes out of the thick quartz windows, watching luminous marine life and never-before-seen creatures flit out of the inky darkness.

A deep dive into Beebe's eyewitness accounts of underwater exploration, The Bathysphere Book blends research and storytelling, uncovering a magical world where ghostly glowing organisms test the limits of human understanding.

This multi-contributor, international volume synthesizes contributions from the world's leading soil scientists and ecologists, describing cutting-edge research that provides a basis for the maintenance of soil health and sustainability. The book covers these advances from a unique perspective of examining the ecosystem services produced by soil biota across different scales - from biotic interactions at microscales to communities functioning at regional and global scales. The book leads the user towards an understanding of how the sustainability of soils, biodiversity, and ecosystem services can be maintained and how humans, other animals, and ecosystems are dependent on living soils and ecosystem services.

From the icy oceans of our poles to remote coral islands, David Attenborough has filmed in every ocean habitat on planet earth. Now, with long-term collaborator Colin Butfield, he shares the story of our last great, critical wilderness, and the one which shapes the land we live on, regulates our climate and creates the air we breathe.

Through one hundred years, eight unique ocean habitats, countless intriguing species - and through personal stories, history and cutting-edge science - Ocean uncovers the mystery, the wonder and the frailty of the most unexplored habitat on our planet. And it shows its remarkable resilience: it is the part of our world that can, and in some cases has, recovered the fastest, and in our lifetimes we could see a fully restored marine world, even richer and more spectacular than we could possibly hope, if we act now.

It is a book almost a century in the making, but one that has never been more urgently needed.

Rivers are significant geomorphological agents, they show an amazing diversity of form and behaviour and transfer water and sediment from the land surface to the oceans. This book examines how river systems respond to environmental change and why this understanding is needed for successful river management. Highly dynamic in nature, river channels adjust and evolve over timescales that range from hours to tens of thousands of years or more, and are found in a wide range of environments. This book provides a comprehensive overview of recent developments in river channel management, clearly illustrating why an understanding of fluvial geomorphology is vital in channel preservation, environmentally sensitive design and the restoration of degraded river channels. It covers: flow and sediment regimes: flow generation; flow regimes; sediment sources, transfer and yield channel processes: flow characteristics; processes of erosion and sediment transport; interactions between flow and the channel boundary; deposition channel form and behaviour: controls on channel form; channel adjustments; floodplain development; form and behaviour of alluvial and bedrock channels response to change: how channels have responded to past environmental change; impacts of human activity; reconstructing past changes river management: the fluvial hydrosystem; environmental degradation; environmentally sensitive engineering techniques; river restoration; the role of the fluvial geomorphologist. Fundamentals of Fluvial Geomorphology is an indispensable text for undergraduate students. It provides straightforward explanations for important concepts and mathematical formulae, backed up with conceptual diagrams and appropriate examples from around the world to show what they actually mean and why they are important. A colour plate section also shows spectacular examples of fluvial diversity.

Ocean Law and Coastal Law have grown rapidly in the past three decades as specialty areas within natural resources law and environmental law. The protection of oceans has received increased attention in the past decade because of the global overfishing crisis, widespread depletion of marine living resources (such as marine mammals and coral reefs), and oil pollution. During this same period, climate change regulation has emerged as a focus of international environmental diplomacy, and has gained increased attention in the wake of disturbing and abrupt climate change related impacts throughout the world that have profound implications for ocean and coastal regulation and marine resources. Climate Change Impacts on Ocean and Coastal Law effectively brings together the two worlds of climate change and ocean and coastal management. It raises important questions about whether and how ocean and coastal law will respond to the regulatory challenges that climate change presents to resources in the oceans and coasts of the U.S. and the world. This comprehensive work assembles the insights of global experts from academia and major NGOs (e.g., Center for International Environmental Law, Ocean Conservancy, and Environmental Law Institute) to address regulatory challenges from the perspectives of U.S. law, foreign domestic law, and international law.

Earth is constantly changing. Wind, water, and even humans change Earth's surface. The land is broken down and worn away by erosion. Introduce students to weathering and erosion with this science reader that features easy-to-read text. Nonfiction text features include a glossary, index, and detailed images to facilitate close reading and help students connect back to the text. Aligned to state and national standards, the book also includes a fun and engaging science experiment to develop critical thinking and help students practice what they have learned.

Developed for Introduction to Soils or Soil Science courses, The Nature and Properties of Soils, 15th Edition, can be used in courses such as Soil Fertility, Land Resources, Earth Science and Soil Geography. The Nature and Properties of Soils is designed to engage today's students with the latest in the world of soils. This hallmark text introduces students to the exciting world of soils through clear writing, strong pedagogy, and an ecological approach that effectively explains the fundamentals of soil science. Worked calculations, vignettes, and current real-world applications prepare readers to understand concepts, solve problems, and think critically. Written for both majors and non-majors, this text highlights the many interactions between the soil and other components of forest, range, agricultural, wetland and constructed ecosystems. Now in full-colour, the 15th Edition includes hundreds of compelling photos, figures, and diagrams to bring the exciting world of soils to life. Extensively revised, new and updated content appears in every chapter. Examples include: coverage of the pedosphere concept; new insights into humus and soil carbon accumulation; subaqueous soils, soil effects on human health; principles and practice of organic farming; urban and human engineered soils; new understandings of the nitrogen cycle; water-saving irrigation techniques; hydraulic redistribution, soil food-web ecology; disease suppressive soils; soil microbial genomics; soil interactions with global climate change; digital soil maps; and many others.

This fully illustrated book is an introduction to the basic principles and concepts of mountain meteorology, and their application in natural resources management.

Changing concentrations of greenhouse gasses are key to our changing climate. Biogochemical Cycles and Climate examines the interaction of the main biogeochemical cycles of the earth with the physics of climate from the perspective of the earth as an integrated system. Biogeochemical cycles play a fundamental role in the Earth's system - they describe the movement of matter and transfer of energy around the planet. This text aims to answer some fundamental questions. How have the cycles of key nutrients, such as carbon, nitrogen, phosphorous, and water changed, both in the geological past and more recently through the impact of humans on the Earth System? How do these cycles interact with each other and affect the physical properties of climate? How can we use this knowledge to mitigate some of the impacts of changing biogeochemistry on climate, and the Earth's habitability and resilience? Understanding the complex interactions of biogeochemistry with the Earth's climate is crucial for understanding past and current changes in climate and above all, for the future sustainable management of our planet.

Discover the epic history of human exploration and migration, and the stories of fearless pioneers the world over, with this stunning tour of history - map by map.

Charting everything from the movement of early Homo species out of Africa some 1.8 million years ago to the astonishing voyages of Polynesian sailors across the Pacific from 4,000 BCE, and from the California Gold Rush to the Race for Space, entries explain the movements of people and cultures who set off into the unknown - in search of adventure or a better life.

Specially commissioned maps show the key driving factors of each journey, and why certain routes were chosen over others - whether due to climate, terrain, or territory - while stunning contemporary examples offer fascinating insights into the unique world-views and political motivations of the people who commissioned them, and the cartographers who created them.

The voyages of history’s greatest explorers - from Zheng He to Ibn Battuta and Marco Polo - are brought to vivid life with accompanying photos, illustrations, and original artefacts, along with recent missions to chart the depths of the oceans and the surface of Mars. And entries also explore the experiences of established Indigenous groups and the impact of settler populations.

Packed with fascinating detail and bursting with lavish illustrations, Exploration: Map by Map is a must-have title for anyone who loves maps, history, or the pioneering spirit.

The Elizabeth River courses through the heart of Virginia. The Jamestown colonists recognized the river's strategic importance and explored its watershed almost immediately after the 1607 founding. The Elizabeth River traces four centuries of this historic stream's path through the geography and culture of Virginia.

European explorers were captivated by the seemingly endless bounty of natural resources on Cape Cod Bay. One Englishman declared that the codfish were so thick one "could" walk on their backs. Early settlers quickly learned how to harness the bay's resources and excelled at shore whaling, shipping and salt making. But as these new industries flourished, the native Wampanoag, who helped the fledgling colony to take root, nearly vanished. Author Theresa Mitchell Barbo's skillful narrative weaves together the natural and cultural histories of the bay, highlighting some of the region's diverse milestones- from the drafting of the Mayflower Compact in 1620 to the establishment of the Pilgrim Nuclear Power Plant 350 years later. "Cape Cod Bay: A History of Salt & Sea" inspires new appreciation for this storied and stunning seascape, and underscores the importance of new efforts to preserve the bay's unique ecosystem.

Constantly in the news and the subject of much public debate, fracking, as it is known for short, is one of the most promising yet controversial methods of extracting natural gas and oil. Today, 90 percent of natural gas wells use fracking. Though highly effective, the process-which fractures rock with pressurized fluid-has been criticized for polluting land, air, and water, and endangering human health. A timely addition to Oxford's What Everyone Needs to Know series, Hydrofracking tackles this contentious topic, exploring both sides of the debate and providing a clear guide to the science underlying the technique. In concise question-and-answer format, Alex Prud'homme cuts through the maze of opinions and rhetoric to uncover key points, from the economic and political benefits of fracking to the health dangers and negative effects on the environment. Prud'homme offers clear answers to a range of fundamental questions, including: What is fracking fluid? How does it impact water supplies? Who regulates the industry? How much recoverable natural gas exists in the U.S.? What new innovations are on the horizon? Supporters as diverse as President Obama and the conservative billionaire T. Boone Pickens have promoted natural gas as a clean, "21st-century" fuel that will reduce global warming, create jobs, and provide tax revenues, but concerns remain, with environmental activists like Bill McKibben and others leading protests to put an end to fracking as a means of obtaining alternative energy. Prud'homme considers ways to improve methods in the short-term, while also exploring the possibility of transitioning to more sustainable resources-wind, solar, tidal, and perhaps nuclear power-for the long term. Written for general readers, Hydrofracking clearly explains both the complex science of fracking and the equally complex political and economic issues that surround it, giving readers all the information they need to understand what will no doubt remain a contentious issue for years to come.

There are many types of weather. Different types of weather make us feel different things. This book introduces students to the concept of weather. With images that are easy to identify and clear, simple sentence structures, this science reader simplifies scientific concepts for young students as they improve their reading skills. A fun and easy science experiment and Your Turn! activity provide more in-depth opportunities for additional learning. Nonfiction text features include a glossary and an index. Engage students in learning with this dynamic text!

Sand, salt, iron, copper, oil and lithium. They built our world, and they will transform our future.

These are the six most crucial substances in human history. They took us from the Dark Ages to the present day. They power our computers and phones, build our homes and offices, and create life-saving medicines. But most of us take them completely for granted.

In Material World, Ed Conway travels the globe - from the sweltering depths of the deepest mine in Europe, to spotless silicon chip factories in Taiwan, to the eerie green pools where lithium originates - to uncover a secret world we rarely see. Revealing the true marvel of these substances, he follows the mind-boggling journeys, miraculous processes and little-known companies that turn the raw materials we all need into products of astonishing complexity.

As we wrestle with climate change, energy crises and the threat of new global conflict, Conway shows why these substances matter more than ever before, and how the hidden battle to control them will shape our geopolitical future. This is the story of civilisation - our ambitions and glory, innovations and appetites - from a new perspective: literally from the ground up.