Titres dans Sciences et mathématiques

Every one of us contains a billion times more atoms than all the grains of sand in the earth’s deserts. If you weigh 150 pounds, you’ve got enough carbon to make 25 pounds of charcoal, enough salt to fill a saltshaker, enough chlorine to disinfect several backyard swimming pools, and enough iron to forge a 3-inch nail. But how did these elements combine to make us human?

In How to Create a Mind, Ray Kurzweil presents a provocative exploration of the most important project in human-machine civilization: reverse-engineering the brain to understand precisely how it works and using that knowledge to create even more intelligent machines. Kurzweil discusses how the brain functions, how the mind emerges, brain-computer interfaces, and the implications of vastly increasing the powers of our intelligence to address the world’s problems.

Two-time winner of the Pulitzer Prize David McCullough tells the dramatic story behind the story about the courageous brothers who taught the world how to fly: Wilbur and Orville Wright.

On December 17, 1903, at Kitty Hawk, North Carolina, Wilbur and Orville Wright's Wright Flyer became the first powered, heavier-than-air machine to achieve controlled, sustained flight with a pilot aboard. The Age of Flight had begun. How did they do it? And why?

The most fatal virus known to science, rabies kills nearly 100 percent of its victims once the infection takes root in the brain. From Greek myths to zombie flicks, from the laboratory heroics of Louis Pasteur to the contemporary search for a lifesaving treatment, Rabid is a fresh, fascinating, and often wildly entertaining look at one of mankind’s oldest and most fearsome foes.

Everyone has heard about Bigfoot. Not many know that there's a much more terrifying cryptid stalking the deepest, darkest woods of North America and beyond. Tune in every Friday night, at 9PM EST, as eyewitnesses share the terrifying details of their real-life Dogman encounters with you. These are real eyewitnesses, not actors. If you listen to this show, you'll never look at the woods the same way again!

There have been many Clayton Thomas-Mullers: The child who played with toy planes as an escape from domestic and sexual abuse, enduring the intergenerational trauma of Canada's residential school system; the angry youngster who defended himself with fists and sharp wit against racism and violence, at school and on the streets of Winnipeg and small-town British Columbia; the tough teenager who, at 17, managed a drug house run by members of his family, and slipped in and out of juvie, operating in a world of violence and pain.

>When South African conservationist Lawrence Anthony was asked to accept a herd of "rogue" wild elephants on his Thula Thula game reserve in Zululand, his common sense told him to refuse. But he was the herd's last chance of survival: they would be killed if he wouldn't take them. In order to save their lives, Anthony took them in. In the years that followed he became a part of their family. And as he battled to create a bond with the elephants, he came to realize that they had a great deal to teach him about life, loyalty, and freedom.

Want to know how AT&T's Bell Labs developed semiconductor technology - and how its leading scientists almost came to blows in the process? Want to understand how radio and television work - and why RCA drove their inventors to financial ruin and early graves? Conquering the Electron offers these stories and more, presenting each revolutionary technological advance right alongside blow-by-blow personal battles that all too often took place.

To live in a pristine land unchanged by man... to roam a wilderness through which few other humans have passed... to choose an idyllic site, cut trees and build a log cabin... to be a self-sufficient craftsman, making what is needed from materials available... to be not at odds with the world but content with one's own thoughts and company. Thousands have had such dreams, but Richard Proenneke lived them.

NASA Astrobiologist and renowned scientist Dr. David Grinspoon brings listeners an optimistic message about humanity's future in the face of climate change. For the first time in Earth's history, our planet is experiencing a confluence of rapidly accelerating changes prompted by one species: Humans. Climate change is only the most visible of the modifications we've made - up until this point, inadvertently - to the planet. And our current behavior threatens not only our own future but that of countless other creatures.

After Hurricane Katrina struck and power failed, amid rising floodwaters and heat, exhausted staff at Memorial Medical Center designated certain patients last for rescue. Months later, a doctor and two nurses were arrested and accused of injecting some of those patients with life-ending drugs.

Are human beings immortal? Are apples conscious? Do our legal systems make assumptions about free will that are just plain wrong? Of all the terrific books on quantum physics—from Stephen Hawking to Brian Greene—the questions they never seem to satisfy are the implications of the science. We know that quantum physics is real—our phones and computers wouldn’t work if the science wasn’t right. But what does it all mean?

Relax or fall asleep to gently whispered meditations, bedtime stories, poems, trivia, and curious Wikipedia articles. Access all 400+ episodes (FREE for a limited time) at www.silkpodcasts.com.

Following on from her examination of the weird and wonderful animal kingdom, this second season of Earpedia sees comedian Sue Perkins presenting a series of audio guides to the planet's most useful, bizarre and interesting plants.

Hay fever. Peanut allergies. Eczema. Either you have an allergy or you know someone who does. Billions of people worldwide—an estimated 30 to 40 percent of the global population—have some form of allergy. Even more concerning, over the last decade the number of people diagnosed with an allergy has been steadily increasing, placing an ever-growing medical burden on individuals, families, communities, and healthcare systems. Medical anthropologist Theresa MacPhail, herself an allergy sufferer whose father died of a bee sting, set out to understand why.

The Art of Fermentation is the most comprehensive guide to do-it-yourself home fermentation ever published. Sandor Ellix Katz presents the concepts and processes behind fermentation in ways that are simple enough to guide listeners through their first experience making sauerkraut, and in-depth enough to provide greater understanding for experienced practitioners. While Katz contextualizes fermentation in terms of biological and cultural evolution, nutrition, and even economics, this is primarily a compendium of practical information.

The Great Lakes - Erie, Huron, Michigan, Ontario, and Superior - hold 20 percent of the world's supply of surface fresh water and provide sustenance, work, and recreation for tens of millions of Americans. But they are under threat as never before, and their problems are spreading across the continent. The Death and Life of the Great Lakes is prize-winning reporter Dan Egan's engaging portrait of an ecological catastrophe happening right before our eyes.

In this collection of lectures that Richard Feynman originally gave in 1963, unpublished during his lifetime, the Nobel Prize-winning physicist discusses several of the ultimate questions of science. What is the nature of the tension between science and religious faith? Why does uncertainty play such a crucial role in the scientific imagination? Is this really a scientific age?

James Gleick, the author of the best sellers Chaos and Genius, now brings us a work just as astonishing and masterly: A revelatory chronicle and meditation that shows how information has become the modern era’s defining quality - the blood, the fuel, the vital principle of our world. The story of information begins in a time profoundly unlike our own, when every thought and utterance vanishes as soon as it is born.

Clarence L. "Kelly" Johnson led the design of such crucial aircraft as the P-38 and Constellation, but he will be more remembered for the U-2 and SR-71 spy planes. His extraordinary leadership of the Lockheed "Skunk Works" cemented his reputation as a legendary figure in American aerospace management.