On June 10, 2003, a little rover named Spirit blasted off on a rocket headed for Mars. On July 7, 2003, a twin rover named Opportunity soared through the solar system with the same mission: to find out if Mars ever had water that could have supported life.A thrilling addition to the acclaimed Scientists in the Field series, The Mighty Mars Rovers tells the greatest space robot adventure of all time through the eyes-and heart-of Steven Squyres, professor of astronomy at Cornell University and lead scientist on the mission.

This suspenseful page-turner captures the hair-raising human emotions felt during the adventures with two tough rovers.

Travel through time with the maestros as they explore the amazing history of timekeeping!

Did you know that there is more than one calendar? While the most commonly used calendar was on the year 2000, the Jewish calendar said it was the year 5760, while the Muslim calendar said 1420 and the Chinese calendar said 4698. Why do these differences exist? How did ancient civilizations keep track of time? When and how were clocks first invented?

Find answers to all these questions and more in this incredible trip through history.

Max Axiom has a mission. The National Space Agency wants to build a lunar colony, but it needs a team of top-notch engineers to get the job done. Join Max as he scours the globe to learn about incredible engineers and the amazing things they do.

This guide for teachers is the answer to all questions children ask and all the wonders they want to investigate — from the marvel of a raindrop on a leaf, to the power of a volcano, to the mysteries of the universe.

This award-winning bestseller is the biggest and best collection of science activities for children 6 to 14 years old. There are projects, experiments, games, puzzles, and stories. They cover all areas of science, including matter and energy, the human body, the environment, rocks, plants, animals, insects, weather, stars and planets, and technology.

Activities range in length from the popular ‘Quickies’ to projects that can be done over several days or weeks. They’ve all been tested and use simple materials. Easy-to-follow explanations, engaging illustrations, and fun facts (did you know that a cockroach can live for nine days without its head?). Many thousands of copies of Science Is… have been used by student teachers to get started in science class. Make this a book you’ll turn to again and again.

“An innovative book … Youngsters will be intrigued by the exciting activities crammed into this book.” (Today’s Parent)

“An excellent reference source for parents and teachers!” (School Library Journal)

“A powerful and practical resource… Will enrich any school science curriculum. Highly recommended!” (Appraisal, School of Education, Boston University)

Max Axiom has a mission. The city mayor needs a recycling center to decrease pressure on its bulging landfill. Join Max as he uses the engineering process to design and build an awesome recycling center.