Europe is finally set to begin the roll-out of its long-awaited satellite navigation system, Galileo, but full operation is still some years away.

Governments and aid agencies should help the world's poorest to move away from areas likely to be hit by flooding and drought, a UK report says.

Leaders of nearly 200 major companies around the world call for tougher action on climate change, saying it will reduce prosperity if unchecked.

Wave and tidal stream power are set to get more funding in proposed changes to the level of support for renewable energy.

The UK government launches a tree biosecurity plan, as scientists confirm the arrival of another deadly tree disease in England.

A study by an independent scientific project, set up in the wake of the "ClimateGate" affair, concludes the Earth really is warming.