What is the main idea of NASA's article?
What does the section title "Travelers of the Future, Beware"?
What does "apparently" mean in this context?
In the same sentence below, what is another word or phrase that means the same as "arid"?
"Arid, rocky, cold and apparently lifeless, the Red Planet offers few hospitalities."?
What environment on Earth is most like living on Mars?
Where are the largest volcanoes mentioned in this article?
NASA says that "Mars looms as the ultimate lonely planet destination."
What does "destination" mean in this context?
NASA states "Channeled Scabland in Washington, where catastrophic floods swept through the land…"
What does "catastrophic" mean in this context?