Over at Discover Blogs. Mostly about 1493: Uncovering the New World Columbus Created.
10 Questions for Charles C. Mann
Charles C. Mann is the author of several books, including 1491: New Revelations of the Americas Before Columbus and 1493: Uncovering the New World Columbus Created. Much of his work has been involved in publicizing the ecological factors which shape the course of human history. You can read a lengthy review of 1493 over at Chad Orzel’s blog. Needless to say, I highly recommend it (I read it on the Kindle edition, and it was interesting to see which passages other people had highlighted).