Brian Greene, professor of physics and mathematics at Columbia University and co-founder of the World Science Festival, explains what we know about time travel so far. Following is a transcript of ...

Time travel has been one of the biggest tropes in science fiction for years. But what if you could actually go back in time and visit a loved one before their death? There’s, obviously, ...

Giant Freakin Robot enumerated the many ways that characters in films time travel using as little effort as possible. He ...

Carl Sagan, the astronomer, Pulitzer Prize-winning author, and legendary popularizer of science, gave this interview during the making of "Time Travel." True to form, he discusses arcane aspects ...

Google prioritises the convenience of its millions of users, and it has recently introduced an amazing new feature. With this ...

Advanced planning, strategic timing and collecting travel rewards can all get you a cheaper trip. Many or all of the products on this page are from partners who compensate us when you click to or ...

Sustainable travel is about travelling in a way that ... atmosphere is well over 400 parts per million higher than at any time in at least 800,000 years — and it’s still increasing, causing ...

Be sure to research currency exchange rates ahead of time, and scout out the best places to swap money. A little digging ...