Mary Kay Carson

"In the 1990s, scientists lived inside Biosphere 2 (Biosphere 1 is the Earth itself) for two years, trying to figure out if colonizing Mars would ever be possible. Now scientists don't live there but instead conduct all sorts of studies and experiments aimed to help us better understand our environment and especially understand what sort of things are happening to it due to climate change and other man-made problems. It's a unique take on the Scientists...

The heroic struggles of the thousands of slaves who sought freedom through the Underground Railroad are vividly portrayed in this powerful activity book, as are the abolitionists, free blacks, and former slaves who helped them along the way. The text includes 80 compelling firsthand narratives from escaped slaves and abolitionists and 30 biographies of "passengers," "conductors," and "stationmasters," such as Harriet Tubman, William Still, and Levi...

Follow bat scientists into the trenches - and caves - and experience the fight to save the beloved bats.

Tracing the evolution of humankind's pursuit of astronomical knowledge, this resource looks deep into the furthest reaches of space. Children will follow along as the realization that the Earth is not at the center of the universe leads all the way up to recent telescopic proof of planets orbiting stars outside the solar system. In addition to its engaging history, this book contains 21 hands-on projects to further explore the subjects discussed....

This activity book tells the amazing true story of how two bicycle-making brothers from Ohio, with no more than high-school educations, accomplished a feat that forever changed the world. At a time when most people still had not ridden in an automobile, Wilbur and Orville Wright built the first powered, heavier-than-air flying machine. Woven throughout the heartwarming story of the two brothers are activities that highlight their ingenuity and problem-solving...

"Presents information about asteroids and comets, including fast facts, history, and technology used to study them"--Provided by publisher.

"Presents information about icy dwarf planets, including fast facts, history, and technology used to study them"--Provided by publisher.

"Presents information about the sun, including fast facts, history, and technology used to study it"--Provided by publisher.

"Learn about Philo Farnsworth, and see how he invented tv"--Provided by publisher.

"Presents information about Venus, including fast facts, history, and technology used to study the planet"--Provided by publisher.