Mascotas alrededor del mundo

Nature is amazing and filled with different shapes. Learn about the different shapes found in nature. Paired to the fiction title What Can I Make?.

Animals sing or talk to communicate. They make noise for different reasons. Find out why some animals make certain noises. Paired to the fiction title So Many Classes.

Animals do not brush their teeth, but they still have ways to keep their teeth clean. Read to find out how. Paired to the fiction title Going to the Zoo.

Poetic text recounts the childhood of the noted Spanish poet, including his love for the nature and folklore of his native Andalusia, his introduction to music and literature at home, and his health problems.

The plot of The Empty Region takes the reader from the military camps of holy warriors in Pakistan, to the security corridors of the CIA and the FBI. It’s a fascinating puzzle inhabited by historical characters, including Osama bin Laden and George W. Bush, as well as officials aware of the tragedy´s secrets. Szichman leads us along the terminals where the air pirates of al-Qaida consummated their tragic ritual, makes us travel on the airplanes, turned into guided missiles, and recreates the 102 minutes when the burning towers of the World Trade Center became hell on earth. Although...

Esta es una colección de pequeños alienígenas guardianes de la naturaleza que salen de su planeta en la búsqueda de la mayor contaminador del universo, el malvado Zirt Zlunder. Se escapa y viene a parar en la Tierra. En este libro Zirt Zlunder el contaminador está contaminando el Ártico, donde se escondió. Los Pequeños Guardianes Ellos encuentran Zirt Zlunder e impedirán que contaminen el Ártico. ¿Tendrán éxito? ¿Deberán arrestar a Zirt Zlunder el terrible contaminador?

Venerado y vilipendiado a un tiempo, Lobachevski se cierne imponente sobre la matemática del siglo XIX. Al igual que sucede a la mayoría de los mitos, el Lobachevski real está oculto por capas de negligencia y desconocimiento. Su fantástica obra, argumentaban muchos, no era otra cosa que herejía matemática, una senda falsa. Lobachevski es una personalidad abrumadora, un soñador empedernido, un hacedor de mundos imposibles pero reales. Lobachevski es, para muchos, una persona desconocida. Este libro cuenta la historia de un hombre sencillo, pero sagaz, obstinado y profundo desde el...