If they jumped vertically with no run up, their centre of mass would clear 3.5m compared to humans' 60cm.

BBC: Gibbons' extraordinary jumps 'down to technique'

By digitising the outline of each jumping gibbon frame by frame, they revealed how its centre of mass moved, and they calculated the forces needed to propel 6kg (a stone) of hairy ape through the air.

BBC: Gibbons' extraordinary jumps 'down to technique'

Several hundred Harland and Wolff workers have marched from their shipyard to the centre of Belfast for a mass meeting.

BBC: Shipyard workers hold mass meeting

The largest crowd during the Pope's stay is expected on Sunday, when he will say an open-air mass in Blonie, near the centre of Krakow.

BBC: Pope pleads for peace and mercy

Pope Francis will celebrate Mass on Thursday next week by washing the feet of prisoners in a youth detention centre in Rome, the Vatican has said.

BBC: Pope Francis to wash feet of prisoners in pre-Easter Mass