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, with photos, diagrams, charts and the 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.

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, with photos, diagrams, charts and images.

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. They have helped provide us with a habitable planet, playing a key role in creating the atmosphere, oceans and land. 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 is living, breathing and changing and has been doing so 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.

Skuif handel oor die evolusie van ons wêreld vanaf die begin van lewe tot in die toekoms. Die boek gee ’n ongelooflike oorsig van elke tydperk in die aarde se tektoniese geskiedenis. Hierdie verstommende visuele voorstelling van die aarde se geologiese geskiedenis beskryf die verskuiwing van landmassas en die ontwikkeling van die kontinente soos ons dit vandag ken.

Met pragtige wêreldkaarte en illustrasies wat die oorsprong van lewe uitbeeld en die aarde se moontlike toekoms vorspel, is Skuif die ideale gids tot ons planeet se geskiedenis. Martin Ince beskryf op toeganklike wyse wat die impak van geologiese veranderinge op die lewe op aarde is.

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.

A thrilling journey to the planet's most extreme places with volcanologist and filmmaker Professor Clive Oppenheimer, revealing how volcanoes have shaped us and our planet.

Volcanoes mean so much more than threat and calamity. Like our parents, they've led whole lives before we get to know them.

We are made of the same stuff as the breath and cinders of volcanoes. They have long shaped the path of humanity, provoked pioneering explorations and fired up our imaginations. They are fertile ground for agriculture, art and spirituality, as well as scientific advances, and they act as time capsules, capturing the footprints of those who came before us.

World-renowned volcanologist Clive Oppenheimer has worked at the crater's edge in the wildest places on Earth, from remote peaks in the Sahara to mystical mountains in North Korea. His work reveals just how entangled volcanic activity is with our climate, economy, politics, culture and beliefs. From Antarctica to Italy, he paints volcanoes as otherworldly, magical places where our history is laid bare and where nature speaks to something deep within us.

Blending cultural history, science, myth and adventure, Mountains of Fire reminds us that, wherever we are on the planet, our stories are profoundly intertwined with volcanoes.

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.

'Steve Brusatte, the author of The Rise and Fall of the Dinosaurs, brings mammals out from the shadow of their more showy predecessors in a beautifully written book that . . . makes the case for them as creatures who are just as engaging as dinosaurs.' - The Sunday Times, 'Best Books For Summer' 'In this terrific new book, Steve Brusatte . . . brings well-known extinct species, the sabre-toothed tigers and the woolly mammoths, thrillingly back to life' - The Times The passing of the age of the dinosaurs allowed mammals to become ascendant. But mammals have a much deeper history. They - or, more precisely, we - originated around the same time as the dinosaurs, over 200 million years ago; mammal roots lie even further back, some 325 million years. Over these immense stretches of geological time, mammals developed their trademark features: hair, keen senses of smell and hearing, big brains and sharp intelligence, fast growth and warm-blooded metabolism, a distinctive line-up of teeth (canines, incisors, premolars, molars), mammary glands that mothers use to nourish their babies with milk, qualities that have underlain their success story. Out of this long and rich evolutionary history came the mammals of today, including our own species and our closest cousins. But today's 6,000 mammal species - the egg-laying monotremes including the platypus, marsupials such as kangaroos and koalas that raise their tiny babies in pouches, and placentals like us, who give birth to well-developed young - are simply the few survivors of a once verdant family tree, which has been pruned both by time and mass extinctions. In The Rise and Reign of the Mammals, palaeontologist Steve Brusatte weaves together the history and evolution of our mammal forebears with stories of the scientists whose fieldwork and discoveries underlie our knowledge, both of iconic mammals like the mammoths and sabre-toothed tigers of which we have all heard, and of fascinating species that few of us are aware of. For what we see today is but a very limited range of the mammals that have existed; in this fascinating and ground-breaking book, Steve Brusatte tells their - and our - story.

A BBC Radio 4 Book of the Week 'A subject that could not be more important. A compact classic!' Bill McKibben 'I learned something new - and found something amazing - on every page' Anthony Doerr, author of All the Light We Cannot See From Pulitzer Prize winner Annie Proulx - whose novels are infused with her knowledge and deep concern for the earth - comes an urgent and riveting history of wetlands, their ecological role and how the loss of them threatens the planet. Fens, bogs, swamps and marine estuaries are the earth's most desirable and dependable resources, and in four illuminating parts Proulx documents the emergence of their systemic destruction in the pursuit of profit and the consequent release of their stored carbon. Wide-ranging and idiosyncratic, Proulx's explanation of wetlands takes readers to the fens of sixteenth-century England, Canada's Hudson Bay Lowlands, Russia's Great Vasyugan Mire and America's Okefenokee National Wildlife Refuge and introduces the nineteenth-century explorers who launched the ravaging of the Amazon rainforest. Proulx was born in the 1930s, a time, as she says, when 'in the ever-continuing name of progress, Western countries busily raped their own and other countries of minerals, timber, fish and wildlife.' Fen, Bog & Swamp is both a revelatory history and an urgent plea for wetland reclamation from a writer whose passionate devotion to observing and preserving the environment is on glorious display. 'Magnificent, bringing to life hitherto overlooked habitats' Guardian 'Proulx's sparkling book will open your eyes to humanity's reckless trashing of wetlands' Telegraph 'A haunting tribute ... Proulx's poetic description of these places, and peat itself, is a pleasure to read' Financial Times

With a new afterword, Why You Are Here: A speech on the opening of the COP26 climate summit As a young man, I felt I was out there in the wild, experiencing the untouched natural world - but it was an illusion. The tragedy of our time has been happening all around us, barely noticeable from day to day - the loss of our planet's wild places, its biodiversity. I have been witness to this decline. A Life on Our Planet contains my witness statement, and my vision for the future - the story of how we came to make this, our greatest mistake, and how, if we act now, we can yet put it right. We have the opportunity to create the perfect home for ourselves and restore the wonderful world we inherited. All we need is the will do so.

A bold new story of human progress, told through six materials that built our world and will transform our future.

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.

Provides a comprehensive systematic review of the African proboscidean fossil record Includes a summary of taxonomy, geochronology, biogeography and morphology Documents major faunal events including those associated with hominin origins Synthesizes new data from genomic, isotopic and microware analyses Emphasizes the role of elephants in ecosystems and the importance of conservation

The Handbook of Irrigation Hydrology and Management examines and analyzes irrigated ecosystems in which water storage, applications, or drainage volumes are artificially controlled in the landscape and the spatial domain of processes varies from micrometers to tens of kilometers, while the temporal domain spans from seconds to centuries. The continuum science of irrigation hydrology includes the surface, subsurface (unsaturated and groundwater systems), atmospheric, and plant subsystems. Further, it presents numerous considerations including the selection of economically viable cropping patterns, land allocation by crop, water resource allocation by crop, irrigation scheduling, deficit management irrigation, optimizing crop yields, and more. Features: Offers water-saving strategies to increase the judicious use of scarce water resources Presents strategies to maximize agricultural yield per unit of water used for different regions Compares irrigation methods to offset changing weather patterns and impacts of climate change

A BBC Radio 4 Book of the Week ‘Magnificent’ Guardian ‘Remarkable … A compact classic!’ Bill McKibben ‘I learned something new – and found something amazing – on every page’ Anthony Doerr, author of All the Light We Cannot See Fens, bogs, swamps and marine estuaries are the earth’s most desirable and dependable resources. Here, Pulitzer Prize winner Annie Proulx brings her witness and research to the vitally important role they play in preserving the environment, and their systemic destruction in the pursuit of profit. Travelling from the fens of sixteenth-century England to America’s Okefenokee National Wildlife Refuge, Fen, Bog and Swamp is both a revelatory history and an urgent plea for wetland reclamation, from one of our greatest prose stylists. ‘A rousing call to action’ Esquire ‘Sparklingly furious … it has a profoundly positive message’ Richard Mabey, Telegraph ‘This haunting tribute … is a pleasure to read’ Financial Times

Following the success of his first novel Dahab Chris Bean in this second book allows his basic geological training to give credibility to a story of the catastrophic events that overwhelm the planet in 2050. His passion and thrill for adventure combined with a much-travelled life while pursuing his profession as a fisherman and fisheries consultant has given him an insight into situations both harsh and beautiful. In this novel he makes no concessions while depicting the scene of utter desperation in which the main characters find themselves. Using love and hope together as he has done in his own life he shows how to turn around a situation of almost nothing into a viable future. Married and with grown up children and young grandchildren he lives on the Lizard Peninsular in Cornwall. Apart from his fishing activities he is an avid painter and runner in the local Hash House Harriers.

The year is 1973 and changes are afoot in Great Yarmouth and Brokencliff-on-Sea as the New Year comes in with bang! Return to a simpler time when family holidays at the seaside were still fun and electronic devices had never been heard of. The only sound that was heard was the gentle lapping of the waves, the gulls circling above, and the trot of the horse's hooves along the promenade and music from the funfairs.

This book presents a comprehensive review of the state-of-the-art research on water treatment methods for the removal of cyanobacteria, taste and odour compounds, and cyanotoxins. The topics covered include practically all technologies that are currently used or are in a state of research and development e.g. membrane filtration, adsorption, biological treatment, chemical disinfection-oxidation, advanced oxidation processes, reviewing their effects on cyanotoxins with regards to degradation, detoxification, mineralization and relative mechanisms. The book highlights strong and weak points regarding the applicability of these techniques on a large scale, discusses issues regarding the quality of treated water, and identifies research gaps and future research needs on the topic. Topics covered include: * Introduction to cyanobacteria and cyanotoxins * Cyanotoxins and human health * Physical treatment for the removal of cyanobacteria/cyanotoxins * Biological treatment for the destruction of cyanobacteria/cyanotoxins * Conventional disinfection and/or oxidation processes * Advanced oxidation processes * Removal and/or destruction of taste and odour compounds. * Integrated drinking water processes. * Transformation products of cyanobacterial metabolites during water treatment. The book concludes with a section of case studies and real life examples, followed by a review of the research gaps and future perspectives. This book has been developed within the frame of the COST-funded CYANOCOST Action http://cyanocost.com/index.php and is edited by experienced scientists in the field. Chapters are authoritative and written by an internationally recognized team of experts in specific research topics related to water treatment for purification from cyanobacteria and cyanotoxins.