Year's Best SF 15 (Year's Best SF Series 15)The best short form science fiction of 2009, selected by David Hartwell and Kathryn Cramer, two of the most respected editors in the field. Who knows what awaits us tomorrow? Much of the most innovative and exhilarating work performed in the boundary less arena of SF is being done in the short form. This year's magnificent harvestgathered, as always, by acclaimed award winning editors and anthologists David G. Hartwell and Kathryn Crameroffers