Albert Einstein

When President Thomas Jefferson bought the Louisiana Territory from cash-strapped France in 1803, he doubled the size of the United States without really knowing what he was getting. He dispatched Meriwether Lewis and William Clark and their Corps of Discovery to explore a territory that would include part or all of fifteen future states and to seek a water route to the West Coast. Westward expansion began immediately, all for the bargain price of 15 million dollars. This book richly explores this fascinating part of history.

In this Spanish title, explore what stunt people do to prepare and keep themselves safe during their dangerous stunts.

Snow falls when it is cold. Find out all the different ways snow can fall during cold weather. Paired to the fiction title Building a Snowman.

Recounts how Michelle Robinson, who came from a modest neighborhood in Chicago, became a Harvard-educated lawyer and the wife of Barack Obama, and describes her role in his rise to the presidency and her relationship with her children.