The Massacre of Mankind by Stephen Baxter

I just finished this authorized sequel to the H.G. Wells classic "War of the Worlds."  It's told in Wells' style and tone, and stays true to the chronology and now-archaic science of the original.  At 453 pages it's long,  and frankly the brief forays into foreign lands could have been cut,  but by and large it's a dandy of a book.