El cero y el infinito

¿Quién soy? ¿Adónde voy? ¿Y con quién? Enfrentarse a cada uno de esos interrogantes supone el enorme desafío de recorrer intrincados caminos que nos conduzcan hasta las tan ansiadas respuestas. El punto de llegada no será único, las vías que se sigan pueden ser distintas, pero es imprescindible responder a esas cuestiones en el orden planteado por el autor. Porque solo sabiendo quiénes somos podremos descubrir hacia dónde nos dirigimos y únicamente entonces estaremos en condiciones de decidir junto a quién elegimos completar ese recorrido. Convencido de que no existen fórmulas...

This bestselling title in the highly acclaimed SeeMore Readers series is now available in Spanish. The same fascinating content as SUPER STORMS.

There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish, and then around again.

November 1940. A circus parade walks through the streets of Warsaw, waving a flag and singing. They are 160 Jewish children, forced by the Nazis to leave their beloved orphanage. It's a sad occasion, but led by Doctor Korczak, their inspirational director, the children are defiantly joyful. Their new home is in the ghetto, a prison for Jews. Two years later they board the train that will carry them away to the death camps. Offered his freedom, Doctor Korczak refuses to abandon the children and proudly joins them on their last journey. This profoundly moving illustrated book is based on the...