El ciclo del nitrógeno (The Nitrogen Cycle)

The moon people use a cloud bridge to travel to the Earth, a messy but beautiful world of incredible variety that becomes their new home.

"Dino" Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children's books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these pterosaurs face-to-face: The Quetzalcoatlus had wings that spanned the length of a school bus! The Dsungaripterus had a bony crest on its head! The Eudimorphodon had a diamond-shaped flap at the end of its long tail! Plus you'll ...

Everyone needs to get along well with others. We need to share, listen, and be kind. Let's explore ways to get along well with others! The Me Pregunto (I Wonder) series is perfect for young learners in prekindergarten through grade 2. These 16-page books give readers an accessible introduction to nonfiction reading. Color photographs and fun, factual examples will grab the attention of young readers and help strengthen reading comprehension skills.

Spanish speakers can now learn the truly inspiring story of the first Latin Supreme Court Justice. Los hispanohablantes pueden ahora conocer la historia verdaderamente inspiradora de la primera jueza latina del Tribunal Supremo. Outspoken, energetic, and fun, Sonia Sotomayor has managed to turn every struggle in life into a triumph. Born in the Bronx to immigrant parents from Puerto Rico, Sonia found out at age nine that she had diabetes, a serious illness now but an even more dangerous one fifty years ago. How did young Sonia handle the devastating news? She learned to give herself her daily ...