Cassiodorus—famed throughout history as one of the great Christian exegetes of antiquity—spent most of his life as a high-ranking public official under the Ostrogothic King Theoderic and his heirs. He produced the Variae, a unique letter collection that gave witness to the sixth-century Mediterranean, as late antiquity gave way to the early middle ages. The Variae represents thirty years of Cassiodorus’s work in civil, legal, and financial administration, revealing his interactions with emperors and kings, bishops and military commanders, private citizens, and even criminals. Thus, the Variae remains among the most important sources for the history of this pivotal period and is an indispensable resource for understanding political and diplomatic culture, economic and legal structure, intellectual heritage, urban landscapes, religious worldview, and the evolution of social relations at all levels of society during the twilight of the late-Roman state. This is the first full translation of this masterwork into English.

A revealing study of the Variae of Cassiodorus and the insight that the epistolary collection can provide into sixth-century Italy.

This book was first published in 2007. Variable stars are those that change brightness. Their variability may be due to geometric processes such as rotation, or eclipse by a companion star, or physical processes such as vibration, flares, or cataclysmic explosions. In each case, variable stars provide unique information about the properties of stars, and the processes that go on within them. This book provides a concise overview of variable stars, including a historical perspective, an introduction to stars in general, the techniques for discovering and studying variable stars, and a description of the main types of variable stars. It ends with short reflections about the connection between the study of variable stars, and research, education, amateur astronomy, and public interest in astronomy. This book is intended for anyone with some background knowledge of astronomy, but is especially suitable for undergraduate students and experienced amateur astronomers who can contribute to our understanding of these important stars.

A never-before-published masterpiece from science fiction's greatest writer, rediscovered after more than half a century. When Joel Johnston first met Jinny Hamilton, it seemed like a dream come true. And when she finally agreed to marry him, he felt like the luckiest man in the universe. There was just one small problem. He was broke. His only goal in life was to become a composer, and he knew it would take years before he was earning enough to support a family. But Jinny wasn't willing to wait. And when Joel asked her what they were going to do for money, she gave him a most unexpected answer. She told him that her name wasn't really Jinny Hamilton---it was Jinny Conrad, and she was the granddaughter of Richard Conrad, the wealthiest man in the solar system. And now that she was sure that Joel loved her for herself, not for her wealth, she revealed her family's plans for him---he would be groomed for a place in the vast Conrad empire and sire a dynasty to carry on the family business. Most men would have jumped at the opportunity. But Joel Johnston wasn't most men. To Jinny's surprise, and even his own, he turned down her generous offer and then set off on the mother of all benders. And woke up on a colony ship heading out into space, torn between regret over his rash decision and his determination to forget Jinny and make a life for himself among the stars. He was on his way to succeeding when his plans--and the plans of billions of others--were shattered by a cosmic cataclysm so devastating it would take all of humanity's strength and ingenuity just to survive. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

After Philly teenager Alexis Duncan is injured in a gang shooting, her promising basketball career comes to a halt. At the urging of new Indian student (and crush?) Aamani, Alexis shifts her focus to the school’s STEM team in hopes of earning a college scholarship, but gains more than she could’ve imagined.

Periphyton, an algal assemblage which surrounds the submerged parts of higher plants and in some cases covers the bottom like a blanket, is one of the most conspicuous features of South Florida's shallow-water ecoystems--such as found within Everglades National Park. The authors conducted a study of the periphyton in Everglades National Park and the East Everglades 208 study area to: provide a quantitative description of the gross taxonomic composition of periphyton in various aquatic habitats; determine whether statistically significant differences in taxonomic composition between sites can be documented; relate variation in periphyton taxonomic composition to variation in environmental variables; and evaluate the relative potential value of various periphyton taxonomic compositions as a food source.