The Victorians, perhaps more than any Britons before them, were diggers and sifters of the past. Though they were not the first to be fascinated by history, the intensity and range of their preoccupations with the past were unprecedented and of lasting importance. The Victorians paved the way for our modern disciplines, discovered the primeval monsters we now call the dinosaurs, and built many of Britain’s most important national museums and galleries. To a large degree, they created the perceptual frameworks through which we continue to understand the past. Out of their discoveries, new histories emerged, giving rise to fresh debates, while seemingly well-known histories were thrown into confusion by novel tools and methods of scrutiny. If in the eighteenth century the study of the past had been the province of a handful of elites, new technologies and economic development in the nineteenth century meant that the past, in all its brilliant detail, was for the first time the property of the many, not the few. Time Travelers is a book about the myriad ways in which Victorians approached the past, offering a vivid picture of the Victorian world and its historical obsessions.

An entertaining book full of humour, science and history

The TARDIS touches down in London in 2006, in the midst of a war that has left the city in ruins. Now the Doctor must help the military refine the ultimate weapon - a time travel machine.

Time travel. It's dangerous, traumatic, a high-risk pursuit. It's also the most thrilling thing you'll ever do. Sam Winterson has gone missing in time. One of his heists has gone seriously wrong, and if he doesn't surface soon, his enemies will take their revenge on his mother. As the time traveler who rescues lost time travellers, I am the only one who can help. But there are three problems. Nobody in my daily life - including my boyfriend Delaney - knows that time travel is possible, except... ... my twin sister, Luna, who refuses to take on this mission for me, because.. Sam is my ex for a reason. But does that mean I should leave him to die?

When physicist Michael Shelborne mysteriously vanishes, his son Shel discovers that he had constructed a time travel device. Fearing his father may be stranded in time—or worse—Shel enlists the aid of linguist Dave MacElroy to accompany him on the rescue mission. Their journey through history takes them from the enlightenment of Renaissance Italy through the American Wild West to the civil-right upheavals of the 20th century. Along the way, they encounter a diverse cast of historical greats, sometimes in unexpected situations. Yet the elder Shelborne remains elusive. And then Shel violates his agreement with Dave not to visit the future. There he makes a devastating discovery that sends him fleeing back through the ages, and changes his life forever.

There are various arguments for the metaphysical impossibility of time travel. Is it impossible because objects could then be in two places at once? Or is it impossible because some objects could bring about their own existence? In this book, Nikk Effingham contends that no such argument is sound and that time travel is metaphysically possible. His main focus is on the Grandfather Paradox: the position that time travel is impossible because someone could not go back in time and kill their own grandfather before he met their grandmother. In such a case, Effingham argues that the time traveller would have the ability to do the impossible (so they could kill their grandfather) even though those impossibilities will never come about (so they won't kill their grandfather). He then explores the ramifications of this view, discussing issues in probability and decision theory. The book ends by laying out the dangers of time travel and why, even though no time machines currently exist, we should pay extra special care ensuring that nothing, no matter how small or microscopic, ever travels in time.

The second collection of stories from Callahan's Crosstime Saloon, the neighborhood tavern to all of time and space, includes tales told by humans or otherwise, regardless of race, creed, or dimension of origin.