検索キーワード： 化学

When you're cooking, you're a chemist! Every time you follow or modify a recipe you are experimenting with acids and bases, emulsions and suspensions, gels and foams. In your kitchen you denature proteins, crystallize compounds, react enzymes with substrates, and nurture desired microbial life while suppressing harmful microbes. And unlike in a laboratory, you can eat your experiments to verify your hypotheses.

Testosterone propels our drive for exploration and risk, for competition and creation, and even our survival. The effects of testosterone permeate the traditions, philosophy, and literature of every known culture - without it, the world would be a drastically different place. It also has a role in humanity's darker side, contributing to violence, hubris, poverty, crime, and selfishness. Recent revelations of the science of testosterone show that high levels will deplete compassion and generosity, and even reduce the affection we show our children.

When Speaker Newt Gingrich greeted Dr. David Lewis in his office overlooking the National Mall, he looked at Dr. Lewis and said: "You know you’re going to be fired for this, don’t you?" "I know," Dr. Lewis replied, "I just hope to stay out of prison." Gingrich had just read Dr. Lewis' commentary in Nature, titled "EPA Science: Casualty of Election Politics".

Known as Monsanto's Roundup by consumers, and as glyphosate by scientists, the world's most popular weed killer is used everywhere from backyard gardens to golf courses to millions of acres of farmland. For decades it's been touted as safe enough to drink, but a growing body of evidence indicates just the opposite, with research tying the chemical to cancers and a host of other health threats. In Whitewash, veteran journalist Carey Gillam uncovers one of the most controversial stories in the history of food and agriculture, exposing new evidence of corporate influence.

The Guardian's Best Science Book of 2017: the fascinating science and history of the air we breathe. It's invisible. It's ever-present. Without it, you would die in minutes. And it has an epic story to tell. In Caesar's Last Breath, New York Times bestselling author Sam Kean takes us on a...

Crave answers? A Feast of Science demystifies the chemistry of everyday life, serving up practical knowledge to both inform and entertain. Guaranteed to satiate your hunger for palatable and relevant scientific information, Dr. Joe Schwarcz proves that "chemical" is not necessarily synonymous with "toxic".

Seventy years ago, Erwin Schrdinger posed a simple, yet profound, question: What is life?. How could the very existence of such extraordinary chemical systems be understood? This problem has puzzled biologists and physical scientists both before, and ever since. Living things are hugely complex and have unique properties, such as self-maintenance and apparently purposeful behaviour which we do not see in inert matter. So how does chemistry give rise to biology?

At the dawn of the 20th century, humanity was facing global disaster. Mass starvation, long predicted for the fast-growing population, was about to become a reality. A call went out to the worlds scientists to find a solution. This is the story of the two enormously gifted, fatally flawed men who found it: the brilliant, self-important Fritz Haber and the reclusive, alcoholic Carl Bosch. Together they discovered a way to make bread out of air, built city-sized factories, controlled world markets, and saved millions of lives.

Here's a biographical profile of Charles Goodyear, the man who gave the world one of its most useful products - vulcanized rubber. Natural rubber, the milky sap of rubber trees, is not a very practical commodity. It melts in hot weather or cracks and freezes in cold weather. In 1839, Charles Goodyear came across a process that made rubber so useful it changed the world we live in. A century later there were 122 rubber factories in Ohio.

Se si intende avere una visione globale del corpo umano e della salute...

What can beer teach us about biology, history, and the natural world? From ancient Mesopotamian fermentation practices to the resurgent American craft brewery, authors Rob DeSalle and Ian Tattersall peruse the historical record and traverse the globe for engaging and often surprising stories about beer. They explain how we came to drink beer, what ingredients combine to give beers their distinctive flavors, how beer's chemistry works at the molecular level, and how various societies have regulated the production and consumption of beer.

We all know that without water we couldn't survive, and that sometimes a cup of coffee or a glass of wine feels just as vital. But do we really understand how much we rely on liquids, or the destructive power they hold? Set over the course of a flight from London to San Francisco, Liquid Rules offers listeners a fascinating tour of these formless substances, told through the language of molecules, droplets, heartbeats, and ocean waves.

'Forest bathing' or shinrin-yoku is a way of walking in the woods that was developed in Japan in the 1980s. It brings together ancient ways and wisdom with cutting-edge environmental health science. Simply put, forest bathing is the practice of walking slowly through the woods, in no hurry, for a morning, an afternoon or a day. It is a practice that involves all the senses and as you gently walk and breathe deeply, the essential oils of the trees are absorbed by your body and have an extraordinary effect on positive feelings.

Eat this and live to 100. Don’t, and die. Today, hyperboles dominate the media, which makes parsing science from fiction an arduous task when deciding what to eat, what chemicals to avoid, and what’s best for the environment. In Is That a Fact?, best-selling author Dr. Joe Schwarcz carefully navigates the storm of misinformation to help us separate fact from folly and shrewdness from foolishness.

The internet is a powerful beast when it comes to science; the answer to any query you may have is just a few keystrokes away. Dr. Joe takes a critical look at how facts are misconstrued in the media. He debunks the myths surrounding canned food, artificial dyes, SPF, homeopathy, cancer, chemicals, and more.

The complex ecosystem of the Amazon covers an area about the size of the continental US. Approximately one of every four flowering plant species on earth resides in the Amazon. A single Amazonian river may contain more fish species than all the rivers in Europe combined. The rain forest, which contains approximately 390 billion trees, plays a vital role in stabilizing the global climate by absorbing massive amounts of carbon dioxide - or releasing it into the atmosphere if the trees are destroyed.

The iconic periodic table of the elements is now in its most satisfyingly elegant form. This is because all the "gaps" corresponding to missing elements in the seventh row, or period, have recently been filled and the elements named. But where do these names come from? For some, usually the most recent, the origins are quite obvious, but in others - even well-known elements such as oxygen or nitrogen - the roots are less clear. Here, Peter Wothers explores the fascinating and often surprising stories behind how the chemical elements received their names.

In The Science of Breaking Bad, Dave Trumbore and Donna Nelson explain, analyze, and evaluate the show's portayal of science, from the pilot's opening credits to the final moments of the series finale. The intent is not, of course, to provide a how-to manual for wannabe meth moguls but to decode the show's most head-turning, jaw-dropping moments. Trumbore, a science and entertainment writer, and Nelson, a professor of chemistry and Breaking Bad's science advisor, are the perfect scientific tour guides.

Author David Deamer addresses questions that are the cutting edge of research on the origin of life. In Assembling Life, he provides an overview of conditions on the early Earth four billion years ago and explains why freshwater hot springs are a plausible alternative to salty seawater as a site where life can begin.

The periodic table of elements, first encountered by many of us at school, provides an arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties, and divided into periodic trends. In this Very Short Introduction audiobook, Eric R. Scerri looks at the trends in properties of elements that led to the construction of the table and shows how the deeper meaning of the table's structure gradually became apparent with the development of atomic theory.