News: North and South America

Republicans in the US state of Nevada are to take part in caucuses to decide their choice of presidential candidate; Mitt Romney is in the lead in opinion polls in the state.

Survivors share experiences on World Cancer Day

The group known as Anonymous listened in on a call between the bureau, Scotland Yard and other foreign police agencies about their joint investigation of the group and its allies.

Canadian Prime Minister Stephen Harper will visit China next week to discuss the future of Canada's oil products.

George Esper, who reported on the fall of Saigon for the Associated Press during the last days of the Vietnam war, dies at the age of 79.

Chevron said Friday that it had no intention of apologizing for the environmental damage to the Amazon rain forest for which an Ecuadorean court ruled it responsible.

Alleged Wikileaks suspect Bradley Manning, charged with leaking thousands of classified documents, will face a court martial, says US Army.

US prosecutors close an investigation into allegations of criminal conduct over doping claims in a cycle team partly owned by Lance Armstrong.

The FBI investigates how activists linked to Anonymous obtained a recording of a phone call between US and UK police on their operations against hacking.

Civic groups from around the US are urging New York's attorney general to investigate the New York Police Department surveillance operations.

The anti-Komen revolt was made in the foundation's own image

US President Barack Obama challenges Congress to keep the economic recovery going as new data shows unemployment is down to its lowest rate in three years.

Steve Appleton, the chief executive of memory-chip maker Micron, has died in a plane crash near Boise, Idaho.

Nine-year-old Alannah Shevenell returns home more than three months after undergoing a transplant of six organs to remove a potentially deadly tumour.

A major breast cancer charity reverses a decision to cut funding to women's group Planned Parenthood, after a furious outcry.

Apple is granted a suspension of a sales ban imposed on some of its iPads and iPhones in Germany.

Hackers Anonymous release a recording of an intercepted conference call between the FBI and UK police discussing their efforts to fight hacking.

The US economy created 243,000 jobs in January, while the unemployment rate fell to 8.3%, according to better-than-expected official figures.

A US graffiti artist who painted Facebook's offices is set to become a millionaire when the social network begins trading as a public company.

US explorers set sights on $3bn loot from British shipwreck