In 1977, as twelve-year-old Theo struggles with a science class project on space exploration, questions emerge about why his father never returned from Vietnam

The hilarious new science fiction comedy When a misfit trash collector is chosen by aliens to represent Earth, one wrong move can lead to Galactic War. Or, even

Learn about the impact that humans have on the Earth, its environment, and how to reduce damage.

The internationally successful Ultimate Book series expands its scope to embrace—very appropriately—the whole world! The Ultimate Book of Planet Earth offer

Fun pictograms and infographics about space make learning about math topics such as angles, decimals, and probability easy and fun. In this book, readers are in