Why We Sleep: Unlocking the Power of Sleep and Dreams [EPUB]

Why We Sleep: Unlocking the Power of Sleep and Dreams [EPUB]
Why We Sleep: Unlocking the Power of Sleep and Dreams by Matthew Walker
2017 | EPUB | ISBN: 9781501144318 | 6.38MB

The first sleep book by a leading scientific expert—Professor Matthew Walker, Director of UC Berkeley’s Sleep and Neuroimaging Lab—reveals his groundbreaking exploration of sleep, explaining how we can harness its transformative power to change our lives for the better.

Sleep is one of the most important but least understood aspects of our life, wellness, and longevity. Until very recently, science had no answer to the question of why we sleep, or what good it served, or why we suffer such devastating health consequences when we don't sleep. Compared to the other basic drives in life—eating, drinking, and reproducing—the purpose of sleep remained elusive.

An explosion of scientific discoveries in the last twenty years has shed new light on this fundamental aspect of our lives. Now, preeminent neuroscientist and sleep expert Matthew Walker gives us a new understanding of the vital importance of sleep and dreaming. Within the brain, sleep enriches our ability to learn, memorize, and make logical decisions. It recalibrates our emotions, restocks our immune system, fine-tunes our metabolism, and regulates our appetite. Dreaming mollifies painful memories and creates a virtual reality space in which the brain melds past and present knowledge to inspire creativity.

Walker answers important questions about sleep: how do caffeine and alcohol affect sleep? What really happens during REM sleep? Why do our sleep patterns change across a lifetime? How do common sleep aids affect us and can they do long-term damage? Charting cutting-edge scientific breakthroughs, and synthesizing decades of research and clinical practice, Walker explains how we can harness sleep to improve learning, mood, and energy levels; regulate hormones; prevent cancer, Alzheimer’s, and diabetes; slow the effects of aging; increase longevity; enhance the education and lifespan of our children, and boost the efficiency, success, and productivity of our businesses. Clear-eyed, fascinating, and accessible, Why We Sleep is a crucial and illuminating book.

Brief History of Everyone Who Ever Lived: The Human Story Retold Through Our Genes [EPUB]

Brief History of Everyone Who Ever Lived: The Human Story Retold Through Our Genes [EPUB]
A Brief History of Everyone Who Ever Lived: The Human Story Retold Through Our Genes by Adam Rutherford
2017 | EPUB | ISBN: 9781615194049 | 1.44MB

In our unique genomes, every one of us carries the story of our species—births, deaths, disease, war, famine, migration, and a lot of sex.

But those stories have always been locked away—until now.

Who are our ancestors? Where did they come from? Geneticists have suddenly become historians, and the hard evidence in our DNA has blown the lid off what we thought we knew. Acclaimed science writer Adam Rutherford explains exactly how genomics is completely rewriting the human story—from 100,000 years ago to the present.

A Brief History of Everyone Who Ever Lived will upend your thinking on Neanderthals, evolution, royalty, race, and even redheads. (For example, we now know that at least four human species once roamed the earth.) Plus, here is the remarkable, controversial story of how our genes made their way to the Americas—one that’s still being written, as ever more of us have our DNA sequenced.

Rutherford closes with “A Short Introduction to the Future of Humankind,” filled with provocative questions that we’re on the cusp of answering: Are we still in the grasp of natural selection? Are we evolving for better or worse? And . . . where do we go from here?

Evolution's Bite: A Story of Teeth, Diet, and Human Origins [EPUB]

Evolution's Bite: A Story of Teeth, Diet, and Human Origins [EPUB]
Evolution's Bite: A Story of Teeth, Diet, and Human Origins by Peter S Ungar
2017 | EPUB | ISBN: 9780691160535 | 4.7MB

What teeth can teach us about the evolution of the human species

Whether we realize it or not, we carry in our mouths the legacy of our evolution. Our teeth are like living fossils that can be studied and compared to those of our ancestors to teach us how we became human. In Evolution's Bite, noted paleoanthropologist Peter Ungar brings together for the first time cutting-edge advances in understanding human evolution and climate change with new approaches to uncovering dietary clues from fossil teeth to present a remarkable investigation into the ways that teeth―their shape, chemistry, and wear―reveal how we came to be.

Ungar describes how a tooth's "foodprints"―distinctive patterns of microscopic wear and tear―provide telltale details about what an animal actually ate in the past. These clues, combined with groundbreaking research in paleoclimatology, demonstrate how a changing climate altered the food options available to our ancestors, what Ungar calls the biospheric buffet. When diets change, species change, and Ungar traces how diet and an unpredictable climate determined who among our ancestors was winnowed out and who survived, as well as why we transitioned from the role of forager to farmer. By sifting through the evidence―and the scars on our teeth―Ungar makes the important case for what might or might not be the most natural diet for humans.

Traveling the four corners of the globe and combining scientific breakthroughs with vivid narrative, Evolution's Bite presents a unique dental perspective on our astonishing human development.

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