"WILL THIS CASE ROLL AWAY? The Earth Day Fair is days away, but Nate's classroom project-a robot named Mr. Butler-has disappeared. Nate the Great and his dog, Sludge, take on the unusual case, and they are soon searching high and low in and around the school. Will Nate find the robot in time for the fair?"--

Happily celebrating Earth Day, Jet Propulsion takes his Ready Jet Go friends on an amazing ride around the world in his flying saucer while convincing them that every day should be Earth Day.

Readers will learn all about Earth Day and how important it is to the heatlh of our planet.

Gappah's powerful novel of exploration and adventure in 19th-century Africa is the captivating story of the loyal men and women who carried explorer and missionary Dr. Livingstone's body, his papers, and maps, 1,500 miles across the continent of Africa, so his remains could be returned home to England and his work preserved there. "This is how we carried out of Africa the poor broken body of Bwana Daudi, the Doctor, David Livingstone, so that he...

"The Sun never stops working to keep things on Earth running smoothly. (That's why it's been Employee of the Month for 4.5 billion years.) So why does the Sun get to be center of attention? Because it's our solar system's very own star! This funny and factual picture book from Awkward Yeti creator Nick Seluk explains every part of the Sun's big job: keeping our solar system together, giving Earth day and night, keeping us warm, and more. In fact,...

Everyone has an inner nerd just waiting to be awakened by the right passion. Bill Nye will help you find yours. Here Bill shows you how to develop critical thinking skills and create change, using his "everything all at once" approach that leaves no stone unturned. Whether addressing climate change, the future of our society as a whole, personal success, or stripping away the mystery of fire walking, there are certain strategies that get results:...

Named after the Roman god of war, Mars has fascinated people for thousands of years. Did you know that ... A Martian year is 687 Earth days, almost twice as long as a year on Earth. Mars's biggest valley, Valles Marineris, is four times as deep as the Grand Canyon! Scientists think that Mars, now rocky and barren, once had an ocean, rivers, and a thicker atmosphere. Explore the wonders of Mars, the Red Planet, with science writer Seymour Simon in...

"A recounting of protests throughout American history that have shaped our nation"--

"No one would have believed in the last years of the nineteenth century that this world was being watched keenly and closely by intelligence greater than man's; that as men busied themselves about their various concerns they were scrutinized and studied. Yet across the gulf of space, intellects vast and cool and unsympathetic regarded this earth with envious eyes, and slowly and surely drew their plans against us. Then, late one night, in the middle...