Jack Challoner Livres

Le corps humain est un merveilleux ensemble qui recèle bien des surprises. Cet ouvrage rassemble plus de 400 données passionnantes, histoires insolites et statistiques étonnantes sur le corps, relatives à l’anatomie, la physiologie, la médecine, l’histoire et la mythologie.Trouvez la réponse à toutes les questions qui vous intriguent : est-ce qu’un excès de sucre rend les enfants (ou vous-même) hyperactifs ? Quelle utilité ont les fesses (en dehors d’être des coussins confortables) ?Explorez l’univers qui est en vous avec intérêt et étonnement. Saviez-vous que plus de 90 % des cellules qui vivent dans et sur votre corps sont des bactéries ? Que, chaque fois que vous regardez un film, vous en ratez plusieurs minutes ? Ou que votre corps contient pas moins de 70 km de nerfs ?Découvrez les récits étonnants des scientifiques, des médecins ou même des artistes qui ont contribué à notre connaissance du corps humain, et profitez des conseils pratiques pour rester en bonne santé.

A partir d'un matériel simple, guidé par des textes clairs et des photos montrant chaque étape de la réalisation, l'enfant s'initie au plaisir de créer pour ses parents et ses amis des broches et des colliers, de réaliser des cartes postales accordéon, de faire des photomontages, et même... d'envelopper ses cadeaux dans ses propres pochettes multicolores !

The story of the most abundant substance on Earth, from its origins in the birth of stars billions of years ago to its importance in the living world.Water is so ubiquitous in our lives that it is easy to take for granted. The average American uses ninety gallons of water a day; nearly every liquid we encounter is mostly water--milk, for example, is 87 percent water. Clouds and ice--water in other forms--affect our climate. Water is the most abundant substance on Earth, and the third-most abundant molecule in the universe. In this lavishly illustrated volume, science writer Jack Challoner tells the story of water, from its origins in the birth of stars to its importance in the living world.Water is perhaps the most studied compound in the universe--although mysteries about it remain--and Challoner describes how thinkers from ancient times have approached the subject. He offers a detailed and fascinating look at the structure and behavior of water molecules, explores the physics of water--explaining, among other things, why ice is slippery--and examines the chemistry of water. He investigates photosynthesis and water's role in evolutionary history, and discusses water and weather, reviewing topics that range from snowflake science to climate change. Finally, he considers the possibility of water beyond our own hydrosphere--on other planets, on the Moon, in interstellar space.

What links the Taj Mahal and our skeleton? Calcium. The Eiffel Tower and our blood? Iron. The salt on our chips and the street lamps that guide us home? Sodium. The elements make up everything, and this book is the perfect guide to every one of them.

Presents a review of technological innovations and inventions, from the ancient world to the present day

This guide is part of a series which introduces a wide range of scientific topics and topical issues affecting our daily lives. This book explains how the Internet and other digital technologies have transformed our world, from the binary code to interactive TV.

This is an illustrated reference to the elements that make up everything in our universe. General information about the properties, behaviour and occurrence of the elements, their main compounds and their principle uses are given.

Integrating words and pictures, this is a family reference book on energy structured so that the individual themes of each spread make up a complete visual story and a self-contained module. On every spread there is a specially shot colour photograph of objects shown in real-life close-up detail.

Simple experiments demonstrate the different forces that cause different kinds of weather