Racismo: Historia del peligroso mito de la raza

“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 horned dinosaurs face-to-face: Torosaurus had the biggest skull of any animal ever! Pentaceratops had five sharp horns on its head! Styracosaurus was as big as an ice cream truck! Plus, you'll get to know Centrosaurus,...

Cuarto y último de la nueva edición íntegra, en cuatro volúmenes, de este gran clásico de la historiografía concebido según los cánones del espíritu de la Ilustración. Publicada por vez primera entre 1776 y 1787, esta historia de la decadencia y ruina del Imperio Romano obtuvo el inmediato reconocimiento académico y el favor de los lectores, motivando su continua reedición.

Learn how technology has improved lighthouses over time with this book that features a hands-on STEAM challenge and uses real-world examples to give insight into how the engineering design process is used to solve problems.

Tornadoes are some of the strongest storms on the planet. It’s not safe to go near them, but what if we could? Readers will dive into the world of wild weather in a special ship that lets them get up close and personal with a tornado. From the cone of silence deep inside the storm to the incredible winds and lightning created by a superstorm, this book will electrify readers as well as educate them on what to do if a tornado forms nearby.