This article answers some of the most common questions about Mars: Why is it red? Is there water on Mars? What else have scientists discovered from spacecraft that have landed there? Also, visitors can follow links to learn more about...

Learn to write a five-paragraph persuasive essay by working through six links to videos, graphic organizers, and activities on space exploration.

Who should pay for politicians traveling before it violates ethical codes of abuse of power? Legislators and their staff were offered and accepted millions of dollars worth of free trips. This activity explores the ethics of our...

Sickle cell disease is an inherited blood disorder. Learn what it is and how it is passed on, what sickle cell crisis is and its cause, the signs and symptoms of sickle cell disease, how it is treated, tips for traveling if you have it,...

This site contains helpful information and photos of the Himalayas. Learn valuable information from world traveler Mogens Larsen and journey with him to the enchanting Himalaya Mountains.

This article explores the changes an astronaut's body goes through in space. Also find the answer to many other fascinating questions people have about space travel.

Fourth graders will write a story about how a drop of water may have traveled to arrive at the school.

Lewis and Clark traveled for two years and covered 4,000 miles to reach the Pacific Ocean. They had the help of a young Native American girl, Sacagawea, who carried with her a small baby! Students will learn about the Lewis and Clark...

Part of the National Air and Space Museum's online exhibition about Exploring Planets, this describes and gives visuals of telescopes, probes and fly-by aircrafts, orbiters, and landers as current methods for earth and airborne...

This site provides a chronology of Lewis and Clark's expedition to the West from 1804-06. There are also brief biographies of the two explorers and the site provides descriptions of 80 historic sites that now exist along the Lewis and...