This book is about memory--about how the past persists into the present, and about how this persistence has been understood over the past two centuries. Since the French Revolution, memory has been the source of an intense disquiet. Fundamental cultural theories have sought to understand it, and have striven to represent its stresses.

This volume presents a broad panorama of the current status of research of invertebrate animals considered belonging to the phylum Cnidaria, such as hydra, jellyfish, sea anemone, and coral. In this book the Cnidarians are traced from the Earth’s primordial oceans, to their response to the warming and acidifying oceans. Due to the role of corals in the carbon and calcium cycles, various aspects of cnidarian calcification are discussed. The relation of the Cnidaria with Mankind is approached, in accordance with the Editors’ philosophy of bridging the artificial schism between science, arts and Humanities. Cnidarians' encounters with humans result in a broad spectrum of medical emergencies that are reviewed. The final section of the volume is devoted to the role of Hydra and Medusa in mythology and art.

The events related to the 1964 coup and the military dictatorship (1964-85) have become common currency in the recent public debate in Brazil. The issue is especially strategic to the extreme right-wing groups surrounding Jair Bolsonaro, the president elected in 2018. For them, the 1964 coup is cherished and celebrated, marking defeat of the left and the beginning of a political regime oriented towards order and progress. The political project built around Bolsonaro is an attempt to impose a distorted and Manichean view of recent history, both by discourse and attempts of censorship. According to that view, 1964 was not a coup detat, but a revolution that saved Brazilians from communism. In Brazil, history is being manipulated to convince people that the military were good rulers, an image that connects to the present authoritarian (albeit elected) government supported by the Armed Forces. Right-wingers, nostalgic for the 1960s dictatorship, promote initiatives to discredit academic researchers and historians who disagree with their mind set. A Present Past offers a well-founded approach to the history of the military dictatorship. Chapters are dedicated to analysing the most controversial topics of the current debate. The primary aim is to disseminate knowledge about the prevailing dictatorship circumstances, with a firm eye on how the past military regime impacts on the present. The purpose is to prevent peddlers of fake news and the ultra-right negationists from winning over the Brazilian public with their authoritarian versions of history. In sum, this is a book committed to democracy. This commitment does not imply any disrespect for the academy, or for opposing points of view, but at its heart it defends historiography via scientific method to counter authoritarian imposition of a historical narrative that supports dictatorship in any form and its leaders, political and military, remaining in power through coercion.

This book presents a collection of meta-studies, reviews, and scientometric analyses that together reveal a fresh picture about the past, present, and future of computing education research (CER) as a field of science. The book begins with three chapters that discuss and summarise meta-research about the foundations of CER, its disciplinary identity, and use of research methodologies and theories. Based on this, the book proceeds with several scientometric analyses, which explore authors and their collaboration networks, dissemination practices, international collaboration, and shifts in research focus over the years. Analyses of dissemination are deepened in two chapters that focus on some of the most influential publication venues of CER. The book also contains a series of country-, or region-level analyses, including chapters that focus on the evolution of CER in the Baltic Region, Finland, Australasia, Israel, and in the UK & Ireland. Two chapters present case studies of influential CER initiatives in Sweden and Namibia. This book also includes chapters that focus on CER conducted at school level, and cover crucially important issues such as technology ethics, algorithmic bias, and their implications for CER.In all, this book contributes to building an understanding of the past, present and future of CER. This book also contributes new practical guidelines, highlights topical areas of research, shows who to connect with, where to publish, and gives ideas of innovative research niches. The book takes a unique methodological approach by presenting a combination of meta-studies, scientometric analyses of publication metadata, and large-scale studies about the evolution of CER in different geographical regions. This book is intended for educational practitioners, researchers, students, and anyone interested in CER. This book was written in collaboration with some of the leading experts of the field.

Today our societies face great challenges with water, in terms of both quantity and quality, but many of these challenges have already existed in the past. Focusing on Asia, Water Societies and Technologies from the Past and Present seeks to highlight the issues that emerge or re-emerge across different societies and periods, and asks what they can tell us about water sustainability. Incorporating cutting-edge research and pioneering field surveys on past and present water management practices, the interdisciplinary contributors together identify how societies managed water resource challenges and utilised water in ways that allowed them to evolve, persist, or drastically alter their environment. The case studies, from different periods, ancient and modern, and from different regions, including Egypt, Sri Lanka, Cambodia, Southwest United States, the Indus Basin, the Yangtze River, the Mesopotamian floodplain, the early Islamic city of Sultan Kala in Turkmenistan, and ancient Korea, offer crucial empirical data to readers interested in comparing the dynamics of water management practices across time and space, and to those who wish to understand water-related issues through conceptual and quantitative models of water use. The case studies also challenge classical theories on water management and social evolution, examine and establish the deep historical roots and ecological foundations of water sustainability issues, and contribute new grounds for innovations in sustainable urban planning and ecological resilience.