Worldwired by Elizabeth Bear

Elizabeth Bear's near-future trilogy concludes with the fate of the world in the palm of Jenny Casey's artificially reconstructed hand . . .

Give Canada's Master Warrant Officer Jenny Casey an inch and she'll take a galaxy. That's just the kind of person a world on the brink of destruction needs. The year is 2063, and Earth has been brutalized. An asteroid flung at Toronto by the PanChinese government has killed tens of millions and left the equivalent of a nuclear explosion in its wake. Humanity must find another option . . .

Perched above the devastation in the starship Montreal, Jenny is still in the thick of the fray. Plugged into the worldwire, connected to a brilliant AI, her mind can be everywhere and anywhere at once. But it's focused on the mysterious alien beings right outside her ship. Are they there to help - or destroy? With Earth a breeding ground for treason and betrayal as governments struggle to assign blame, Jenny holds the fate of humankind in her artificially reconstructed hand . . .

Elizabeth Bear was born on the same day as Frodo and Bilbo Baggins, but in a different year. This, coupled with a childhood tendency toward reading the dictionary, doomed her early to penury, intransigence and the writing of speculative fiction.

She is a recipient of the John W. Campbell Award for Best New Writer and a Locus Award, and has been nominated for the BSFA, Philip K. Dick and Lambda awards. She lives in southern New England with a presumptuous cat and her hobbies include archery, guitar and the indiscriminate slaughter of defenseless houseplants.