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...

Cuando suenan las primeras notas de Turn It Up, ¿sientes que tu cuerpo no puede parar? ¿Eres fan incondicional de Calum y lo sigues desde su participación en La Voz Kids? Si te consideras un auténtico calumier, este libro es para ti. «Me llamo Calum y soy un chico normal. Después de participar en un concurso de televisión mi vida cambió. Ahora, gracias a todos mis fans, chicas y chicos que me dan su apoyo y cariño, estoy pasando por el mejor momento de mi vida. »Cada vez que veo cómo cantáis mis canciones, cada vez que siento vuestro calor en los conciertos, cada vez que me...

The sun is responsible for all life on Earth, but what exactly is it? Our star is an amazing force that can be as dangerous as it is important. From solar flares to the threat of blowing up altogether, the sun is one of the most interesting things in our solar system. Readers take a trip to the sun to see how it works and exactly what it is made of. They’ll learn about the life cycle of a star and see just how long we have until we have to find a new planet to call home. Don’t worry, they’ll be happy to learn that (hopefully) we have millions of years left!

Offers encouragement and practical advice for meeting challenges head on, with words of inspiration and fun, reminding girls to be who they are.

What do a shark, a seahorse, and a ray have in common? They're all fish! Learn about the characteristics that all fish share.