I'm making a number of stories available via Nancy Fulda's Anthology Builder website. Right now, a suite of serious stories that appeared in The Magazine of Fantasy & Science Fiction over a ten-year period should be fully-available by the end of the day. The stories are:
"Jonny Punkinhead," 1996
"Chromosome Circus," 2001
"To Kiss the Star," 2001
"Perfect Stranger," 2006
Each story portrays an advance in human technology, or a challenge related to it. Many people might not realize that, rather than the "gedanken" experiments popular in some sub-genres of science fiction, the stories of this type that I write are based in considerable research on actual, real potential technologies or challenges. As to the "freak" stories, it is perfectly possible for there to be a human mutational virus, although that has not yet occurred, and I hope - never will. I think, however, in some ways, we already have these viruses, and one good example would be HPV. The changes they cause are not as dramatic as those portrayed in the stories, but the underlying concept is similar.
With Anthology Builder, you can establish an account, choose any stories by any author you wish, and assemble your own, 350 page printed book that will be delivered to you within 10-30 days. The cost is $14.95 - very reasonable for a trade paperback book of this length.
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Also, this bald chap named John Joseph Adams is editing a new anthology about wizards, The Way of the Wizard. Do visit John's blog. This book joins other awesome volumes he has edited for Prime Books. These books are gorgeous, and filled with the best stories on their themes.