Although we can't technically travel through time (yet), when we think of the past or the future we engage in a sort of mental time travel. This uniquely human ability to psychologically travel through time arguably sets us apart from other species.
Scientists from 20 countries are working on plans to create a vast network of radio telescopes, the size of a continent that could reveal the birth of planets and galaxies, the mysteries of dark energy as well as joining the search for signals from alien civilisations.
A would-be saboteur arrested today at the Large Hadron Collider in Switzerland made the bizarre claim that he was from the future. Eloi Cole, a strangely dressed young man, said that he had travelled back in time to prevent the LHC from destroying the world.
Experiments with Eurasian jays have shown that the birds store food that they will want in the future - "planning" for their impending needs. The study revealed that birds would stash more of the foods that they knew would be unavailable to them on forthcoming foraging trips. Jays are not the first birds to show that they might have the capacity for what is known as "mental time travel".