Pennsylvania

Bison attacks woman at Yellowstone National Park

Trump-backed celebrity doctor wins Senate primary

Trump urges 'Dr Oz' to declare win in Senate vote

Capitol riots loom large in Republican primaries

Trump-backed 'Dr Oz' in cliffhanger vote count

US spring snowstorm leaves 300,000 in the dark

First US robot lunar rover on track for launch

Search for monkey missing after US motorway crash

Greyfriars Bobby and the dogs immortalised in statues

Eight children among 12 dead in Philadelphia fire

Why a former oil executive is capping abandoned wells. Video, 00:03:03Why a former oil executive is capping abandoned wells

In pictures: Silence and tears as US remembers 9/11 attacks

'I studied law in jail - now I want to change the system'

Storm Ida kills dozens across US north-east

How America watched as Taliban won the war

US cheerleader wins free speech case against school

US teen's Snapchat rant reaches Supreme Court

The 'vaccine hunters' helping older people get jabs. Video, 00:02:24The 'vaccine hunters' helping older people get jabs

Birder snaps rare 'half-female, half-male' bird

Bristol choir helps USA girl with sleep problem. Video, 00:02:04Bristol choir helps USA girl with sleep problem

US snowstorm: Street skiing and states of emergency. Video, 00:01:05US snowstorm: Street skiing and states of emergency

Stabbing victim, 21, wanted to 'excel in life'

Learning Welsh in America and Melbourne

US Supreme Court rejects bid to overturn Biden win