The simulation hypothesis—the idea that our universe might be an artificial construct running on some advanced alien computer—has long captured the public imagination. Yet most arguments about it rest ...

A crystal is a solid with a periodic atomic structure and a deviation from the periodicity of the crystal lattice is called a defect. Crystalline defects include point defects (e.g. colour centres) ...

There's an addictive quality to a government game that's unlike the rush you get from shooters or RPGs, although the escapism is no less real. Whether you're setting economic and trade policies, ...