Titres dans Chimie

Phosphorus has played a critical role in some of the most lethal substances on earth: firebombs, rat poison, nerve gas. But it’s also the key component of one of the most vital: fertilizer, which has sustained life for billions of people.

'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.

For centuries, scientists believed that living matter possessed a special quality—a spirit or essence—that differentiated it from nonliving matter. But by the nineteenth century, the scientific consensus was that the building blocks of one were identical to the building blocks of the other. Elixir tells the story of two young chemists who were not convinced, and how their work rewrote the boundary between life and nonlife.

Scientist, resistance fighter and Holocaust survivor Primo Levi was one of Italy's greatest writers and an internationally renowned chronicler of human nature. In his masterpiece The Periodic Table, he charts his incredible life story through the medium of chemistry, using the titular list of elements - the building blocks of everything - as a prism to explore his experiences and search his soul.

Scratch beneath the surface of a coffee bean, a red pepper flake, a poppy seed, a mold spore, a foxglove leaf, a magic-mushroom cap, a marijuana bud, or an apple seed, and we find a bevy of strange chemicals. We use these to greet our days (caffeine), titillate our tongues (capsaicin), recover from surgery (opioids), cure infections (penicillin), mend our hearts (digoxin), bend our minds (psilocybin), calm our nerves (CBD), and even kill our enemies (cyanide). But why do plants and fungi produce such chemicals? And how did we come to use and abuse some of them?

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.

In The Alchemy of Us, scientist and science writer Ainissa Ramirez examines eight inventions - clocks, steel rails, copper communication cables, photographic film, light bulbs, hard disks, scientific labware, and silicon chips - and reveals how they shaped the human experience. Ramirez tells the stories of the woman who sold time, the inventor who inspired Edison, and the hotheaded undertaker whose invention pointed the way to the computer.

The Wonders of Radium by Maynard Shipley is a captivating scientific exploration of one of the most fascinating discoveries of the early 20th century. Written in a time of scientific revolution, this work explains the origin, nature, and wide-ranging applications of radium, a radioactive element famously discovered by Marie and Pierre Curie. Shipley skillfully translates complex scientific principles into accessible language, detailing radium's powerful effects—from revolutionizing medical treatments, such as early cancer therapies, to its curious industrial and agricultural uses.

Interesting anecdotes and engaging tales make science fun, meaningful, and accessible. Separating sense from nonsense and fact from myth, these essays cover everything from the ups of helium to the downs of drain cleaners and provide answers to numerous mysteries, such as why bug juice is used to color ice cream and how spies used secret inks. Mercury in teeth, arsenic in water, lead in the environment, and aspartame in food are discussed.

Long before Oliver Sacks became a distinguished neurologist and best-selling writer, he was a small English boy fascinated by metals - also by chemical reactions (the louder and smellier the better), photography, squids and cuttlefish, H.G. Wells, and the periodic table. In this endlessly charming and eloquent memoir, the he chronicles his love affair with science and the magnificently odd and sometimes harrowing childhood in which that love affair unfolded.

The audio is focused and high-yield, covering the most important topics you might expect to learn in a typical undergraduate chemistry course. The material is accurate, up-to-date, and broken down into bite-sized chapters. There are quizzes and key takeaways following each chapter to review questions commonly tested and drive home key points.

Of all the dietary and nutritional claims pitched to us, what can we believe? How does cinnamon affect your health? How splendid is Splenda? Should you buy farmed, wild, or canned food? What's fishy about fish-oil supplements? Will a diet of Twinkies and M&M's lead to weight loss? Water from a tap or from a plastic bottle - which should you choose, and which is better for the environment? Should you carry your groceries home in plastic or brown paper? We all have questions, and Dr. Joe Schwarcz has the answers, some of which will astonish you.

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?

Of all the radioactive elements discovered at the end of the 19th century, it was radium that became the focus of both public fascination and entrepreneurial zeal. Half Lives tells the fascinating, curious, sometimes macabre story of the element through its ascendance as a desirable item - a present for a queen, a prize in a treasure hunt, a glow-in-the-dark dance costume - to its role as a supposed cure-all in everyday 20th-century life, when medical practitioners and business people (reputable and otherwise) devised ingenious ways of commodifying the new wonder element.

In 2016, with the addition of four final elements - nihonium, moscovium, tennessine and oganesson - to make a total of 118 elements, the periodic table was finally complete, rendering any pre-existing books on the subject obsolete. Tim James, the secondary-school science teacher we all wish we'd had, provides an accessible and wonderfully entertaining 'biography of chemistry' that uses stories to explain the positions and patterns of elements in the periodic table.

The cells in our bodies consist of molecules, made up of the same carbon, oxygen, and hydrogen atoms found in air and rocks. But molecules, such as water and sugar, are not alive. So how do our cells - assemblies of otherwise "dead" molecules - come to life, and together constitute a living being? In Life’s Ratchet, physicist Peter M. Hoffmann locates the answer to this age-old question at the nanoscale.

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.

Cheese puffs. Coffee. Sunscreen. Vapes. George Zaidan reveals what will kill you, what won’t, and why - explained with high-octane hilarity, hysterical hijinks, and other things that don’t begin with the letter H. Ingredients offers the perspective of a chemist on the stuff we eat, drink, inhale, and smear on ourselves. Apart from the burning question of whether you should eat that Cheeto, Zaidan explores a range of topics.

In an engaging tour of the science and history of cheese, Michael Tunick explores the art of cheese making, the science that lies underneath the deliciousness, and the history behind how humanity came up with one of its most varied and versatile of foods. Dr. Tunick spends his everyday deep within the halls of the science of cheese, as a researcher who creates new dairy products, primarily, cheeses.

Agatha Christie revelled in the use of poison to kill off unfortunate victims in her books; indeed, she employed it more than any other murder method, with the poison itself often being a central part of the novel. Her choice of deadly substances was far from random—the characteristics of each often provide vital clues to the discovery of the murderer. Christie's extensive chemical knowledge provides the backdrop for A Is for Arsenic, in which Kathryn Harkup investigates the poisons used by the murderer in fourteen classic Agatha Christie mysteries.