"Clés pour comprendre" (Keys to understanding) is a collection intended for the general public based on a dynamic Q&A game. Simple, cheeky or amusing questions are finally given clear, well-reasoned answers. The authors, recognised specialists, do not hesitate to mix science, humour and anecdotes.
Topical and in-depth subjects are explored in a series of questions designed to incite our curiosity about our surroundings and help us understand the world better.
This book traces the history of birds right back to their reptilian origins. It underlines their homogeneity - flight, beak, skeleton and feathers are a bird's reference points - without losing sight of their diversity. Morphological and biological diversity (reproduction especially), but also adaptative. How do they withstand the cold and the predators, how do flightless birds run, how do you fly when you are a vulture? This book explores the intimacy of birds whose habits awaken the curiosity - the Grey Cuckoo, certain species of pigeon or the Hamerkop. It also discusses the relationship between humans and birds.
Is salt required to make soap?Is salt need to mummify?Is the Dead Sea really lifeless?Why does water dissolve salt?Why do you put salt in a champagne bucket?The author answers original, concise and highly-educational questions lightheartedly and with plenty of humour.The book provides the basics of everything you need to know about salt and what makes it so culturally rich.
December 2004, tsunami in Sumatra, January 2010, earthquake in Haiti, March 2011, earthquake in Tohoku and tsunami in Fukushima - all human dramas that remind us constantly that forecasting earthquakes and tsunamis is still a complex and difficult science.This simple, concise book is an introduction to the broad elementary notions of earthquakes and an inventory on their forecasting.
Organic agriculture was born at the beginning of the 20th century and relaunched in 2008 by the Grenelle Environment Round Table.Featuring as strongly in food headlines as in farming, this labelled agriculture continues to bemuse the general public. A trend?A real change? Do we really know what is organic agriculture?
In eighty questions, this book addresses all the rumours involving aquaculture, all the concerns, all the accusations, without any taboos, to shed light on an activity decried for years for its lack of prospects and criticised today for its success.
Admired, raised, illustrated, harvested, chased, collected, eradicated, sold, threatened and protected - humans have been focusing on butterflies for two centuries. How many are there? Where do they live? What do they eat? Why are certain species never seen? Why do some like honey whilst others imitate wasps? Can a private individual contribute to their study? A hundred questions and a hundred answers to explore this light and seemingly fragile world which has more than 135,000 listed species worldwide.
Should pesticides and additives be banned? Do GMO threaten the biodiversity? What should we think of organic foods? Will we be able to feed the world in 2050? Are biofuels leading us to famine? Sixty questions for which the author gives you the key to understanding the "food system" better - starting in the fields and ending in our bodies.
Why do carnivores eat meat? Is there a water-loving cat? Why do lions live in a pride? How is the African wild dog hunted? What are the expressions, gestures and postures of the wolf? Why does the tiger not climb trees? 180 questions and answers to understand a fascinating order of animals, methods for recording and identifying specific behaviours via anecdotes on legendary carnivores.
1.8 billion hectolitres produced every year by industrial breweries, to which we can add dolo, chichas and saké, are impressive evidence of man's gift for transforming starch into a healthy nourishing drink.