When torrential rain flooded his scenic neighbourhood in western Japan, Kentaro Oishi had no hesitation: he jumped in the inflatable normally used for taking tourists white-water rafting and paddled off to rescue stranded locals.

Organizers of a Facebook ad boycott vowed to press on with their campaign, saying the social network's top executives had failed to offer meaningful action on curbing hateful content.

A small group of Nigerian girls and boys wearing leotards and leggings limber up in a spare room at a run-down primary school with patches of damp on the walls.