US Secret Service head quits after lapses

White House to review security procedures around president

First US Ebola case diagnosed in Texas

Man from Liberia was potentially infectious for 4 days

US consumers start to lighten up

Household confidence is at its highest level since 2010

Europe celebrates Ryder Cup victory

US beaten 16½ to 11½, their eighth loss in past 10 contests

US attorney-general Holder to step down

No immediate plans or successor identified

Second day of air strikes against Isis

US-led coalition targets group in eastern and northern Syria

Obama’s grass roots advantage under threat

Democrats can no longer rely on superior campaigning

An illustration of the Nasa satellie Maven on the sunrise side of Planet Mars

Nasa spacecraft reaches orbit around Mars

Maven to study how red planet lost its water

Californian town runs out of water

East Porterville residents struggle with three-year drought

Two UK universities ranked in top three

Cambridge and Imperial College London come in behind MIT in listings

US more open to obesity drugs

Novo Nordisk medicine liraglutide given nod by US FDA

US citizen given hard labour in N Korea

Matthew Miller accused of acts hostile to the regime

Call for new US trade model

Labour and green groups want to reform ‘fast track’ power

‘Tier one’ sport ambition for America’s Cup

Five challengers for defending champions Oracle Team USA

Obama vows to target Isis militants

US president pledges to ‘go after’ Islamic militant group

Christie takes a bet on Atlantic City

New Jersey governor turns to sports betting to help boost city’s fortunes

Detroit seeks a vision through the blight

Restructuring plan divides bankrupt city’s leaders and residents

Record $350m donation for Harvard

Gift from Hong Kong’s Chan family to support public health school

US midterms: At arm’s length

Democrats are distancing themselves from their leader

China fraud unit questions Morgan Stanley