Today is the first day of Sage's magical internship! Her fellow wizards-in-training get to study pyromancy and transfiguration, but Sage has been assigned an internship in...baking? She doesn't think that sounds fun, or particularly magical! But her instructor, Korian, insists that baking is a tasty form of alchemy. In an enchanted kitchen where the ingredients insist that you eat them, Sage learns the simple science behind baking--and that's the...

Con un detalle gloriosamente grosero, conocerá a peligrosos invasores microscópicos como protozoos, hongos, virus y bacterias extrañas; luego verá cómo funcionan nuestros cuerpos para luchar y defendernos contra futuras infecciones. In gloriously gross detail, you'll meet dangerous microscopic invaders like protozoa, fungi, viruses, and foreign bacteria - then see how our bodies work to fight back and defend us against future infections. We...

In gloriously gross detail, you'll meet dangerous microscopic invaders like protozoa, fungi, viruses, and foreign bacteria - then see how our bodies work to fight back and defend us against future infections. We get to know the critters behind history's worst diseases. We delve into the biology and mechanisms of infections, diseases, and immunity, and also the incredible effect that technology and medical science have had on humanity's ability to...

Learn how wild mustangs were first introduced to America and how they still roam free today. On the North American plains, wild mustangs have roamed for generations ... shaping human history and struggling to survive it. For the Spanish, they were a tool of conquest. For Native Americans, they brought on a new way of life where horsemanship and horse-trading were central. And for the entire world, wild mustangs became a renowned wonder of the American...

In 1492, Christopher Columbus sailed across the ocean and discovered America. Right? Wrong! Columbus never actually set foot in what is now the United States. His voyages took him to islands in the Caribbean and along the coast of South America. The truth is, when Columbus first arrived, Indigenous peoples, including the Taino, had been living there for thousands of years, raising their families, running their societies, and trading with their neighbors....