Se llamaba Álvaro

California became a territory in the United States when the Treaty of Guadalupe Hidalgo was signed in 1848. That treaty ended the Mexican War. Several days before its signing, gold was discovered at Sutter’s Mill in what is now Sacramento. The non-Native population of the territory was less than one thousand in 1848, but the gold rush increased that number to one hundred thousand by the end of 1849. The gold rush not only made many people wealthy, it brought ecologic devastation while speeding up California’s statehood. This book richly explores this interesting history.

A closer look at the stomach and how it works with the digestive system to give the body the nutrients it needs to stay healthy.

¿Por qué Covid asusta al mundo? La historia se cuenta desde el punto de vista de Covid. ¿De dónde venía Covid? ¿Por qué Covid se puso tan agresivo? ¿Por qué infectó a la gente? ¿Cómo llegó a Alemania? ¿Cómo podemos protegernos?

This book describes dump trucks called off-highway trucks, explaining their operating equipment and dumping beds, fuel, and jobs.