Tiznados

Me llamo Jackson y en otoño empezaré quinto de primaria. Cuando sea mayor quiero ser científico de animales. ¿Sabías que un guepardo puede correr a 110km/h? ¿Que una cucaracha sin cabeza puede sobrevivir dos semanas? ¿O que cuando un lagarto cornudo se enfada escupe sangre por los ojos? Honestamente, creo que los hechos son mucho mejor que las historias. No puedes ver una historia. No puedes sostenerla en tu mano para medirla. De hecho, las historias no son más que mentiras. Y a mí no me gusta que me mientan. La regla número uno de todo científico es que siempre hay una...

This Spanish language edition of Yuyi Morales's Pura Belpré Award winner and New York Times Bestseller Dreamers is now available in paperback! Caldecott Honor artist and six-time Pura Belpré winner Yuyi Morales's gorgeous book Dreamers, and its Spanish language version Soñadores, are about making a home in a new place. Yuyi and her son Kelly's passage was not easy, and Yuyi did not speak any English at the time. But together, they found an unexpected, unbelievable place: the public library. There, book by book, they untangled the language of this strange new land, and learned to make their ...

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!

Learn more about the renowned British scientist, professor, and author who spent his entire career trying to answer the question: "Where did the universe come from?" Stephen Hawking was born exactly three hundred years after the death of the scientist Galileo, so maybe it was written in the stars that he would become a famous scientist in his own right. Although he was diagnosed with a neurological disease at age 21, Stephen did not let the illness define his life. Known for his groundbreaking work in physics, and identified by his wheelchair and computerized voice system, Stephen continued...