A study finds a "considerable richness" of bee species in urban habitats, suggesting cities could help maintain healthy populations of the vital pollinators.

The next part of the hunt for the missing Malaysia Airlines jet MH370 will be very challenging in places, sea-floor mapping data suggests.

The European Space Agency says the latest two satellites for Europe's version of the US GPS sat-nav system have not gone into the correct orbit.

Iceland issues a red alert for the Bardarbunga volcano, closing air space over the eruption site but all airports currently remain open.