The Path: A One-Mile Walk Through the Universe [Audiobook]
20 December 2013, 07:22
2009 | MP3@96 kbps | 4 hrs 47 mins | 197.36MB
For nearly forty years, Chet Raymo has walked a one-mile path from his house in North Easton, Massachusetts, to the Stonehill College campus where he has taught physics and astronomy. The woods, meadows, and stream he passes are as familiar to him as his own backyard, yet each day he finds something new. "Every pebble and wildflower has a story to tell," Raymo says.
In The Path: A One-Mile Walk Through the Universe, Raymo chronicles the universe he has found by closely observing every detail of his route. He connects the local to the global, the microscopic to the galactic, with a scientists's curiosity, a historian's respect for the past, a child's capacity for wonder. With each step, the landscape he traverses becomes richer and more multidimensional, opening door after door into astromnomy, geology, biology, history, and literaure.
"The flake of granite in the path was once at the core of towering mountains pushed up across New England when continents collided," he writes. "The purple loosestrife beside the stream emigrated from Europe in the 1800s as a garden ornamental, then went wantonly native in a land of wild frontiers. The light from the star Arcturus I see reflected in the brook beneath the bridge at night has been traveling across space for forty years before entering my eye. I have attended to all of these stories and tried to hear what the landscape has to say .... I have attended, too, to language. How did the wood anemone and Sheep Pasture get their names? What does the queset of Queset Brook signify in the language of Native Americans? Scratch a name in a landscape, and history bubbles up like a spring."
The path also reveals the stories of nineteenth-century industrialists who transformed natural resources into power, and turn-of-the-century landscape architects, such as Frederick Law Olmsted, who championed an ideal of nature tamed by conscious intent. In its transformations over the centuries, Raymo writes, the path "encapsulates in many surprising ways the history of our nation and of our fickle love affair with the natural world."
Recognizing that his path is commonplace, and that we all have such routes in our lives, Raymo urges us to walk attentively, stopping often to watch and listen with care. His wisdom and insights inspire us to turn local paths-- whether through cities, suburbs, or rural areas-- into doorways to greater understanding of nature and history.
Epigenetics: How Environment Shapes Our Genes [Audiobook]
20 December 2013, 07:07
2013 | MP3@96 kbps | 4 hrs 58 mins | 204.87MB
Time to worry again—our lifestyle choices do impact our genetic code and that of our children (and even grandchildren!).
Epigenetic means "on the gene," and the term refers to the recent discovery that stress in the environment can impact an individual's physiology so deeply that those biological scars are actually inherited by the next several generations. For instance, a recent study has shown that men who started smoking before puberty caused their sons to have significantly higher rates of obesity. And obesity is just the tip of the iceberg—many researchers believe that epigenetics holds the key to understanding cancer, Alzheimer's, schizophrenia, autism, and diabetes.
Epigenetics: How Environment Shapes Our Genes is the first book for general readers on this fascinating and important topic. The book is driven by stories such as the Dutch famine of World War II, José Canseco and steroids, the breeding of mules and hinnies, Tazmanian devils and contagious cancer, and more.
Physics in Mind [Audiobook]
20 December 2013, 07:05
2013 | MP3@128 kbps + EPUB | 7 hrs 46 mins | 428.91MB
No one can escape a sense of awe when reflecting on the workings of the mind: we see, we hear, we feel, we are aware of the world around us. But what is the mind? What do we mean when we say we are “aware” of something? What is this peculiar state in our heads, at once utterly familiar and bewilderingly mysterious, that we call awareness or consciousness?
In Physics in Mind, eminent biophysicist Werner R. Loewenstein argues that to answer these questions, we must first understand the physical mechanisms that underlie the workings of the mind. And so begins an exhilarating journey along the sensory data stream of the brain, which shows how our most complex organ processes the vast amounts of information coming in through our senses to create a coherent, meaningful picture of the world. Bringing information theory to bear on recent advances in the neurosciences, Loewenstein reveals a web of immense computational power inside the brain. He introduces the revolutionary idea that quantum mechanics could be fundamental to how our minds almost instantaneously deal with staggering amounts of information, as in the case of the information streaming through our eyes.
Combining cutting-edge research in neuroscience and physics, Loewenstein presents an ambitious hypothesis about the parallel processing of sensory information that is the heart, hub, and pivot of the cognitive brain. Wide-ranging and brimming with insight, Physics in Mind breaks new ground in our understanding of how the mind works.