CultureScientists simulate time travel to solve the 'grandfather paradox' A group of scientists test known theories, simulating time travel and solving the 'grandfather paradox' idea that states if someone goes back in time to kill their grandfather, that person will no longer exist.by Robin Burks
ScienceDiscovery of forces that hold together space rocks may help scientists tackle Earth-threatening asteroidsby James Maynard
ScienceLarge Hadron Collider with almost double the energy level on track to relaunch in 2015by James Maynard