||BBC News - US & Canada
|A warm homecoming|
The 44th president returns to Chicago trying to inspire the nation’s youth to be more civic-minded.
|Whale of a time|
Killer whale Takara was already pregnant when the end of the breeding programme was announced.
Whether young people move out is 'tied to economic security' but expectations are changing too.
|'My wife suffered'|
James Phillips' wife Mary was raped and murdered in 1996 and her tormentor has now been executed.
|Ultra violence |
Born in the barrios of Los Angeles, MS-13 has risen to become one of the world's most feared gangs.
|Just say no|
The US Attorney General says the drug war reduced violent crime. Officers who were the front lines disagree.
A study that attached cameras with suction cups to the backs of Antarctic whales has revealed never before seen feeding habits and social interactions.
Faced with Republicans controlling all the levers of government, Democrats are turning to progressive activism.
A business analyst in the US sifts through data and photos to identify running cheats.