An ever greater number of our contemporaries will reach a very much greater age than their ancestors. Longevity is one of the most fertile fields for paradoxes: it is clear that the same causes do not produce the same effects at the age of ten and at the age of one hundred! On the subject of longevity, the "recipe book" is far from having been written. Nevertheless, the Fondation IPSEN has chosen a few of these paradoxes to discuss and try and explain them.

Readers will climb through the pages of this vivid photographic book to explore the parts of a tree--and understand their functions. In summer, the tree sunbathes and seethes with animal life. With autumn comes the flowing sap that makes maple syrup for pancakes. As the tree's leaves begin to fall, winter is coming on and the tree is nearly dormant. Spectacular photographs and fun, informative text not only answer questions about how trees work and why seasons change but also make this book an invitation to observe and enjoy nature and its many wonders.