For centuries, scientists and historians have argued over why Stonehenge was built and, even more puzzlingly, how.

UK travellers are taking advantage of the cheap fares offered to people travelling on December 25.

Dana Johannsen visits a living piece of Northumberland history that vanquishes all traces of castle fatigue.

Business and the environment can be worlds apart. But in London, Anthony Doesburg discovers an organisation dedicated to cutting carbon emissions - while boosting the bottom line.