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...

El misterioso lobo aguza su olfato y campea las elegantes cimas nevadas de los dosmiles más altos de La Rioja y Burgos. Cuando las ventiscas que dieron origen a evocadores circos glaciares se hacen insufribles, penetra en profundos barrancos cubiertos de altivos hayedos. Mientras se esconden los ciervos, saltan salvajes las cascadas que usaron mineros y ferreros, allí donde calmaban la sed merinas y pastores antes de ir a las lejanas tierras del sur. Mil rincones de ensueño aguardan la visita del caminante que aquí viene a gozar de la Naturaleza.

Si tienes un alto sentido de la justicia, mucho sentido del humor y un gran corazón, este libro es para ti. ¡No eres nunca demasiado joven para cambiar el mundo! ¿Te sumas? En esta guía práctica te damos pistas para hacerlo: consejos y tácticas para marcar la diferencia, un montón de actividades paso a paso e historias inspiradoras de niños y niñas que han abierto camino, desde activistas como Malala Yousafzai o Greta Thunberg hasta jóvenes que, como pronto harás tú, han conseguido que se escuche su voz y cambiar las cosas.

The man who saved the lives of his PT-109 crewmen during WWII and became the 35th president fought-and won-his first battle at the age of two-and-a-half, when he was stricken with scarlet fever. Although his presidency was cut short, our nation¿s youngest elected leader left an indelible mark on the American consciousness and now is profiled in our Who Was¿? series. Included are 100 black-and-white illustrations as well as a timeline that guides readers through this eventful period in history.

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...