Significance of North Korea's Hydrogen Bomb Test

The North Korean authorities say they have successfully tested a hydrogen bomb amid reports of a tremor near the main nuclear test site. Our Korea correspondent Steven Evans explains the significance.

The use of guns by police, specifically against young black men, has put the spotlight on race relations in America. The BBC's Rajini Vaidyanathan has travelled across the US looking at the debate around discrimination.

How do you stop your children spending too much time on their phone or computer? UK parents say they find it harder to convince their children to turn off their electronic devices than do homework.