The Vikings were among the world's most restless people.

ECONOMIST: Helge Ingstad | The

Phoenix has thrived because it has been for the rest of America what America is for the world: a magnet for ambitious and restless people.

ECONOMIST: Urban boosterism

The truest Americans, Day-Lewis seems to be telling us, are those who can never be fully at home in the world: Our collective character is a restless one.

CNN: With Lincoln, a new frontier for Day-Lewis

He will be working with the agency Restless Development which works with young people in 50 countries around the world.

BBC: Cornish young farmer works with Nepal's youngsters

Wayne Miller's exhaustively researched, novel-like account of Walt Lillehei, a restless, hard-living surgeon who as a young man survived World War II and a deadly case of lymphatic cancer.

FORBES: Brave heart

Wayne Miller's exhaustively researched, novel-like account of Walt Lillehei, a restless, hard-living surgeon who as a young man had survived World War II and a deadly case of lymphatic cancer.

FORBES: Brave Heart

Eric Levine, from Restless Development, a youth development agency, said youngsters made up half of the world's population and must play an "essential role" in tackling the most urgent world issues.

BBC: Orphans in Haiti