Marsilio Ficino, a leading scholar of the Italian Renaissance who translated all the works of Plato into Latin, examines Plato’s Timaeus, the most widely influential and hotly debated of the Platonic writings. Offering a probable account of the creation and nature of the cosmos, the discussion incorporates such questions as What is the function of arithmetic and geometry in the design of creation? What is the nature of mind, soul, matter, and time? and What is our place in the universe? To his main commentary Ficino adds an appendix, which amplifies and elucidates Plato’s meanings and reveals fascinating details about Ficino himself.

In this age of climate change, killer germs, and obesity, it's easy to feel as if we've fallen out of synch with the global ecosystem. This ecological anxiety has polarized a new generation of Americans: many are drawn to natural solutions and organic lifestyles, while others rally around high-tech development and industrial efficiencies. Johnson argues that both views, when taken to extremes, can be harmful, even deadly. Johnson, raised in the crunchy-granola epicenter of Nevada City, California, lovingly and rigorously scrutinizes his family's all-natural mindset, a quest that brings him into the worlds of an outlaw midwife, radical doctors, renegade farmers and one hermit forester. Along the way, he uncovers paradoxes at the heart of our ecological condition: Why, even as medicine improves, are we becoming less healthy? Why are more American women dying in childbirth? Why do we grow fatter the more we diet? Why have so many attempts to save the environment backfired? In All Natural*--a sparklingly intelligent, wry, and scrupulously reported narrative--Johnson teases fact from faith and offers a rousing and original vision for a middle ground between natural and technological solutions that will assuage frustrated environmentalists, perplexed parents, and confused consumers alike.

As a child, Aldo Leopold was always looking for adventures in nature. This led Leopold to become a forester, wildlife scientist, author, and ultimately one of the most well-known conservationists in American history. Award-winning author Marybeth Lorbiecki brings Leopold to life in this biography enhanced with historic photographs and a school resource section. Marybeth Lorbiecki is the author of more than twenty-five books for children and adults, and she teaches upper-level college writing and children's literature as an adjunct university professor. Her adult biography Aldo Leopold: A Fierce Green Fire earned a Minnesota Book Award.

This is a graduate-level textbook for students in the natural sciences. After reviewing the necessary math, it describes the logical path from Newton's laws of motion to our modern understanding of fluid mechanics. It does not describe engineering applications but instead focuses on phenomena found in nature. Once developed, the theory is applied to three familiar examples of flows that can be observed easily in Earth's atmosphere, oceans, rivers and lakes: vortices, interfacial waves, and hydraulic transitions. The student will then have both (1) the tools to analyze a wide range of naturally-occurring flows and (2) a solid foundation for more advanced studies in atmospheric dynamics and physical oceanography. Appendices give more detailed explanations and optional topics.

Since the early 1990s, advances in toxicology have allowed scientists to detect traces of adulterant substances in everyday products – even down to parts per billion concentrations. We can now detect the presence of harmful ingredients at levels so low that they actually cause no harm. Nonetheless, we get scared. We are now able to overreact to harmless, negligible sources of contamination and flock to ‘natural’, ‘organic’ and ‘chemical-free’ alternative products at elevated prices instead. This urge is driven in part by a set of interesting psychological quirks called the naturalness preference or biophilia. While exposure to many aspects of nature improves our physical and mental wellbeing, marketers are taking advantage of our naturalness preference by selling us ‘organic’ and ‘natural’ products with no functional advantage, sometimes to the detriment of the environment, and that have the unfortunate added effect of peddling a fear of conventional products that do not make such natural connotations. This fear of chemicals, exaggerated by marketers, has led some of us to seek nature in the form of expensive consumer product, which offer almost none of the benefits of spending time outdoors in real nature (which is free of charge). We thus chase nature in the wrong form. We feel guilt, anxiety and mental stress from being coaxed into paying a hefty premium price for "natural" products that are neither safer nor more effective than conventional ones, and forget to appreciate real nature in the process. This book explores the history of chemical fears and the recent events that amplified it. It describes how consumers, teachers, doctors, lawmakers and journalists can help make better connections with the public by telling stories that are more engaging about chemistry and materials science. Written in a sympathetic way, this book explains both sides of the argument for anyone with an interest in science.

In this picture book with minimal text, a tiger with a chair on its back wanders across the different but beautiful landscapes of the Earth, from an Alpine lake to the tundra.

So what is natural? Are you natural? Whose laws do you live by: man's laws, your neighbor's laws, or God's laws? How do you know if you're living by God's natural laws or by man's fear-based laws? Read the conversations at midnight of a husband and wife as they unravel the world of compromise and political correctness that we live in. Matthew and Margaret Minarik's enlightening guide,The Natural Lifewill challenge your core thoughts to their deepest roots, encouraging you to embrace the ultimate goal of life: changing the world one soul at a time. With subjects ranging from birth control, organic food, breastfeeding, education, and learning to turn off the TV,The Natural Lifewill teach you everything you need to know to live life as God intended.