But she refuses to be drawn on her rationale for switching candidates in the closely-fought US Senate race.

Neither government has confirmed who was responsible for the cyberattacks on Sunday evening.

The exchange froze transactions following the incident which has been linked to a North Korean group.

The Federal Bureau of Investigation (FBI) says North Korea was responsible for the hack.

All the latest from Manchester United's Champions League news conference as Michael Carrick and Kobbie Mainoo speak to the media after another defeat.

150 years ago, average human body temperatures appear to have been higher than now. Scientists are still exploring exactly why.

The Grammy award-winning star is to perform at an Americana festival which made its debut this year.

Rathcroghan is one of Europe's oldest unexcavated royal sites. Now, a new walking path is giving travellers access to ancient landmarks – including the cave that inspired Halloween.

A classic of the horror genre that has inspired generations, why is the message of Shelley's 19th-Century novel still overshadowed by its success, more than two centuries on?

After defying projections, solar's dramatic growth means it is overtaking nuclear as a global power source. Here are seven reasons for solar's success, and where it might go from here.

Scientists are using cutting-edge technology to protect one of the world's most famous shipwrecks.

A new global report spotlights the world's emerging urban hotspots. From thriving cultural scenes to changing neighbourhoods, locals reveal what makes them worth exploring now.