BBC (U.S. News)
· US mayor to push tornado shelter law
The mayor of the tornado-devastated town of Moore in Oklahoma vows to push for a new law on shelters, after Monday's deadly twister.
· Boston bomb investigators kill man
A Florida man was shot and killed as he became violent while being questioned by Boston bombing investigators, FBI officials say.
· Shamed congressman runs for NY mayor
A former congressman who resigned in disgrace in 2011 over his racy Twitter messages has announced he will run for mayor of New York City.
· Woods hurt by 'fried chicken' remark
Tiger Woods condemns "hurtful" jibe as Sergio Garcia apologises for what could be interpreted as a racist remark.
· Los Angeles has first Jewish mayor
By a wide margin, Los Angeles elects its first Jewish mayor, Eric Garcetti, a 42-year-old three-term city councilman.
· Bernanke hails benefits of stimulus
US Federal Reserve chairman Ben Bernanke tells Congress that it is too soon to end the stimulus programme or raise interest rates.
· US immigration bill passes hurdle
A sweeping immigration bill that would offer a chance of citizenship to millions living in the US illegally takes a stride forward in Congress.
· Gif inventor says pronounce it 'Jif'
The inventor of the Gif image format says it should be pronounced Jif, despite what the Oxford English Dictionary says.
· Solar plane sets off again across US
The Solar Impulse plane, which holds records including the longest manned zero-fuel flight, sets off on the second leg of a bid to cross the US.
· US tax officials deny foul play
US tax officials tell a congressional hearing they did not know their agency had targeted conservative groups.
· Kerry Kennedy drug case to go ahead
A US judge refuses to dismiss a drug-driving case against Kerry Kennedy, the daughter of the late Robert F Kennedy.
· VIDEO: Ex-senator: How to fix Congress
Former Main Senator Olympia Snowe, who quit the US Congress in 2012, has a prescription for how to change the deadlocked legislature.
· VIDEO: Cellar opened to reveal 'apocalypse'
At least 24 people are confirmed dead, including seven children, and many are missing after a tornado tore through Oklahoma City, US officials say.
· VIDEO: How the Oklahoma tornado was formed
Dozens of people are feared killed by a huge tornado which tore through Oklahoma City suburbs, officials in the US state say. BBC weather presenter Ben Rich explains how the tornado was formed.
· VIDEO: 'I was pretty lucky I suppose'
Oklahoma tornado survivor talks about his experience in the storm
· VIDEO: 'We thought we were dead'
Ricky Stover, who lives near Oklahoma City, locked his cellar door as a huge tornado tore apart his home.
· VIDEO: Teenager plans to go to Mars by 2030
Fifteen-year-old Abby Harrison is already training to become an astronaut and hopes to reach Mars by 2030.
· VIDEO: 92 year old strongman wows crowds
The world of brute strength and brawn isn't just a young man's game, as one 92 year old was keen to prove.
· VIDEO: US lottery ticket scoops $590m
Authorities in the US state of Florida are calling for the holder of a $590m winning lottery ticket to come forward and claim their prize.
· Oklahoma damage bill 'could be $2bn'
The damage from the Oklahoma tornado could reach $2bn (£1.3bn), the Oklahoma Insurance Department warns, although many tenants may have no insurance cover.
· JP Morgan boss wins shareholder vote
JP Morgan chairman and chief executive Jamie Dimon will keep both jobs after shareholders voted in his favour.
· Canada country profile
Provides an overview of Canada, including key events and facts about the world's second-largest country
· Puerto Rico profile
Provides and overview as well as facts and figures for this small dependency of the United States situated in the Caribbean
· St Pierre and Miquelon profile
Provides an overview of what remains of France's once-extensive possessions in North America
· United States country profile
Provides an overview of the United States, including key events and facts about this superpower
· VIDEO: An orchestra walks into a bar...
Heard the one about the orchestra that walked into a bar?
· Is a paperless library still a library?
Getting ready for bookless libraries
· VIDEO: Creative brains map a smarter future
University looks into life-enhancing technologies
· The cassette makes a comeback
The humble cassette tape makes a comeback
· VIDEO: Running barefoot in Wyoming
How barefoot Indian tribe inspired a US fitness revolution
· Murder in Mayfield
Kentucky woman catches a killer, helped by a BBC reporter
· In pictures: Things come apart
Todd McLellan's photographs of disassembled objects
· Tom Ripley and a talent for evil
The talented Mr Ripley, and the meaning of evil
· American The Office clocks out
How US version of The Office reflected on America - and UK
· VIDEO: Tsunami debris washes up in Canada
What tsunami debris is washing up in Canada now?