Henry David Thoreau was known for living simply, but his views and convictions were anything but. This insightful text introduces the man who, though he lived alone in the woods…

Mercury, the smallest and densest planet in the solar system, was first observed at least five thousand years ago, but its proximity to the sun makes it difficult for scientists…

Eli Whitney is remembered as a great inventor. His cotton gin was one of the most important inventions of the Industrial Revolution, and it did much to shape the course…

Monkeys have been compared to humans in many ways, but this book explores what makes a monkey chuckle. Scientists have spent years studying the laughter of monkeys. Does their panting…

Chronicles the life of Geronimo, a famous Native American and Apache chief.

From fur trading to gold mining to farming, Colorado’s economy has often thrived on its rich natural resources. Through accessible text, full color images, and primary source documents, this book…

Facts about how bats see in the dark, if bats really drink blood, which type of bat can eat up to 1,000 mosquitoes in an hour, which bat has a…

Penguins have wings but can’t fly. They’re excellent swimmers, and they live where it’s very cold. However, penguin’s ancient relatives were very different. They had feathers and could fly. Some…