You can’t stand up, your neighbour is lying directly above you and you have to share a loo, but it’s only £30 a night.

Dubbing these “closed timelike geodesics” (CTGs), Ralph and Sajeendran explain in the paper: “Such a CTG would be ideal for ...

After 25 years underground, we finally opened a real time capsule and what we found left us speechless. From valuable collectibles to priceless memories, this video reveals every item sealed away ...