The war for a million Earths spreads to an alternate eighteenth century in the second book of the epic science fiction series the Timeline Wars John Barnes has reinvented alternate-history science fiction in his ingenious saga of the battle to save the multiverse from enslavement by an alien enemy who can transcend time and reality. In the second volume of his remarkable trilogy, the war moves to a new battlefield: a different colonial America still happily tied to the British crown, where miraculous machines prowl the skies. There are a million different Earths across an infinite number of timelines—and every one of them is in peril. Former Pittsburgh private investigator Mark Strang is now a fully trained and blooded Crux Ops special agent, dedicated to the fight against the alien Closers who are invading every Earth in every time. Now the eternal struggle is carrying Strang to a different 1775 Boston, home of astounding technologies, where the colonists remain fiercely loyal to their king across the ocean. Something is rotten in England, though, and Strang must ally himself with the well-respected commander George Washington, the Duke of Kentucky, to derail a terrifying Closer plot and put this world’s history back on its proper course. But the enemy has unleashed a secret weapon that could permanently shift the balance: an unstoppable agent of destruction . . . named Mark Strang.

This reference tracks the development of speculative fiction influenced by the advancement of science and the idea of progress from the eighteenth century to the present day. The major authors and publications of the genre and significant subgenres are covered. Additionally there are entries on fields of science and technology which have been particularly prolific in provoking such speculation. The list of acronyms and abbreviations, the chronology covering the literature from the 1700s through the present, the introductory essay, and the dictionary entries provide science fiction novices and enthusiasts as well as serious writers and critics with a wonderful foundation for understanding the realm of science fiction literature. The extensive bibliography that includes books, journals, fanzines, and websites demonstrates that science fiction literature commands a massive following.

In his day Walter Wellman (1858–1934) was one of America’s most famous men. To his contemporaries, he seemed like a character from a Jules Verne novel. He led five expeditions in search of the North Pole, two by dogsled and three by dirigible airship, and in 1910 made the first attempt to cross the Atlantic Ocean by air—which the self-styled expert on aerial warfare saw as a mission of world peace. He endured hardships, cheated death on more than one occasion, and surrounded himself with a team of assistants as eccentric and audacious as he was. In addition to his daring adventures, Wellman became a nationally known political reporter and unofficial spokesman for the McKinley and Roosevelt administrations. He was not the first newspaper-sponsored adventurer, but more than any of his predecessors he turned exploration into a real-time media event, and his reputation both flourished and suffered because of it. Wellman lived during a time of rapid social and technological change, when explorers were racing to fill in the last remaining blank spots on the map and when aviation promised to fulfill humanity’s greatest hopes and darkest fears. Flight to the Top of the World is a window into Wellman’s time and illuminates many of its dreams and contradictions.

In the new millennium, what secrets lay beyond the far reaches of the universe? What mysteries belie the truths we once held to be self evident? The world of science fiction has long been a porthole into the realities of tomorrow, blurring the line between life and art. Now, in The Year's Best Science Fiction Twenty-Fifth Annual Collection the very best SF authors explore ideas of a new world. This venerable collection of short stories brings together award winning authors and masters of the field such as Robert Reed, Ian McDonald, Stephen Baxter, Michael Swanwick, Paolo Bacigalupi, Kage Baker, Walter Jon Williams, Alastair Reynolds, and Charles Stross. And with an extensive recommended reading guide and a summation of the year in science fiction, this annual compilation has become the definitive must read anthology for all science fiction fans and readers interested in breaking into the genre. "This venerable annual’s twenty-fifth edition represents a milestone for editor Dozois. He has kept faith with the series for a quarter-century without ever shortchanging, or even showing any signs of shortchanging, readers on either quality or abundance of selections."--Booklist