Crisis energética: El futuro de los combustibles fósiles (Energy Crisis: The Future of Fossil Fuels)

From art and architecture to politics, philosophy, and mathematics, "western civilization" owes a great deal to the achievements of ancient Greece, but what do we really know about this long-gone civilization? How did geography influence the politics of the Greek city-states? What's the difference between an agora and an acropolis? This book takes readers several thousand years into the past, when independent city-states ruled the Mediterranean Sea, to find the answers. Full-color photographs and maps, accompanied by accessible text, introduce readers to the many contributions the ancient...

"Tengo derecho a expresarme" examina el derecho de todos los niños a expresar su opinión y a tomar partida en aquello que afecte a sus vidas, dondequiera que vivan y ya sean pobres, no tengan hogar, sean discapacitados o deban trabajar para sobrevivir. Examina los obstáculos que a veces los niños tienen que superar para lograr este derecho.

Introduces the holiday Cinco de Mayo and describes how it is celebrated in Mexico and in the United States.

De la serie MIS PEQUEÑOS HÉROES, nace un volumen dedicado exclusivamente a las mujeres más creativas de la historia: Frida Kahlo, Coco Chanel, J. K. Rowling, Ella Fitzgerald, Astrid Lindgren y muchas más actrices, escritoras y cantantes reunidas en un precioso libro ilustrado en el que podrás recorrer los episodios más importantes de sus vidas y, a la vez, conocer sus hitos y obras más destacadas. ¡Porque las mujeres también hacen historia!

What is my period exactly? Do I need to see a doctor? What does it feel like to wear a pad? What if I get my period at school? Karen Gravelle and her fifteen-year-old niece, Jennifer Gravelle, have written a down-to-earth and practical book that answers any questions you might have about your period, from what it is and what it feels like, to how to choose pads and tampons, to how to talk to your parents about it. The Period Book will help guide you through all the physical, emotional, and social changes that come with your period, as well as related issues like dealing with pimples, mood...