I wandered into the bookstore when I was loitering in the mall as usual, and would have completely missed this if not for my girlfriend who usually spent her times among the magazines section. Exploring History is a new magazine from National Geographic, and with its issue stated as "Premier Issue" and a published date of "Fall 2011" there is no indication of whether this is a one-off or a periodical. Funny thing is that although everything I searched online showed a different cover, the one I purchased was of another cover.
Exploring History covered a wide range of historical topics, and most of them are adapted from articles published in National Geographic's other publications. What differed this magazine from the usual National Geographic magazines is the fact that the latter is too varied, covering topics from geography to politics, whereas the former dedicates itself fully to historical topics.