Thousands of runners - including celebrities and charity fund-raisers - took part in this year's London Marathon.
Around the world, medical services have been put on alert as the likelihood of a swine flu pandemic grows.
Aircraft arriving from Mexico are sprayed with chemicals and some countries - such as Bulgaria - have installed thermographic devices at major airports to monitor signs of fever in arriving passengers.
Residents were visibly moved as Pope Benedict XVI visited the central Italian region of Abruzzo, three weeks after an earthquake killed almost 300 people. It was the Pope's first visit to the region since the quake.
Pakistan has expanded its military operation against suspected Taleban militants by launching air strikes in Buner district, less than 100km (60 miles) from Islamabad.
A car driver crashed into crowds watching a Dutch royal parade, killing six people. The car careered into a monument metres from an open-topped bus carrying Queen Beatrix and members of her family.
The White House has apologised after a low-level flight by a presidential jet and a fighter plane sparked panic among New York office workers. Officials said the fly-past - a photographic exercise - had been co-ordinated with city and state authorities.
Thousands of workers around the world use the traditional May Day marches to protest at the global economic crisis.
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