@BBCMarkMardell via Twitter
Daddy can't build a snowman - one survivor's story a year after the Boston bombing http://t.co/Prw6lSc53Y
President Barack Obama defends his signature healthcare law, saying the debate over its repeal is "over" as he touts high enrolment numbers.
Embattled Toronto Mayor Rob Ford kicks off his re-election campaign at an event his brother calls "history in the making".
The city of Portland, Oregon, is dumping 38m gallons (143m litres) of reservoir water after a teenager was caught urinating into the water supply.
The daughter of former US President Bill Clinton and former US Secretary of State Hillary Clinton announces she is pregnant with her first child.
After 20 years, Alfa Romeo returns to the US
Rancher and armed supporters face off against government
Who was buried behind a boys' school in Florida?
Son of slain Sikh leader running for US Congress
Boston marathon bombing survivors cope with aftermath
Who is running to oust Toronto's embattled, addled mayor?
Moving a dinosaur skeleton across the US
Why are some Americans building mini-homes?