A proposed 24-mile underwater tunnel between Morocco and Spain has hit a fresh snag due to "complex" conditions and may not be ready until 2040.

Scientists uncover hidden land under Iceland, questioning our understanding of Earth's continents and tectonic plates.

We now know who can play who in the Europa League play-off round, and can even now plot rough paths for everyone through the complete knockout phase.

Millions of people from the poor world are trying to cross seas, forests, valleys and rivers, in search of safety, work and ...