Reviews Worst-Case Scenario Ultimate Adventure #2: Mars! by Hena Khan and David Borgenicht Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Science News November 18, 2011 at 2:01 pm Kids must use their science know-how to navigate a mission to Mars in this choose-your-adventure book, picking up facts about space along the way. Chronicle Books, 2011, 204 p., $12.99, ages 8–12