In Jay Cheel's absorbing and frequently amusing documentary How to Build a Time Machine, Ron Mallett and Robert Niosi are two men going about the same process in very different ways. Mallett is a ...

Physicist Paul Davies describes the ideas in his new book, "How to Build a Time Machine".

‘How to Build a Time Machine’: Film Review Two men pursue childhood fantasies in very different ways in Jay Cheel's documentary 'How to Build a Time Machine.' ...

Tipler published a paper on how to build a time machine, a Tipler Cylinder, back in 1974. This machine would enable you to travel back in time.

Time travel has been a popular science-fiction theme since H. G. Wells wrote his celebrated novel The Time Machine in 1895. But can it really be done? Is it possible to build a machine that would ...

Physicist Paul Davies describes the ideas in his new book, "How to Build a Time Machine".