Republican debate: Presidential candidates tear in to absent Donald Trump in Iowa

Even in boycotting a debate with his Republican rivals, front-runner Donald Trump managed to upstage the event on 28 January with a typical dramatic flourish. Instead of attending a seventh debate, the former reality TV star held a competing event across town that he said raised $6m (£4m) for US military veterans. In doing so, he cast a shadow over his rivals, who frequently tossed barbs his way. Jan 29, 2016

Clockwork lion sculpture unveiled in Trafalgar Square

The four bronze lions of Londons central Trafalgar Square got a temporary addition on 28 January, with a clockwork sculpture of the animal unveiled to highlight the plight of big cats. The statue, made of clockwork mechanics, will stand in the square for just a day before being auctioned off to raise money for National Geographics Big Cats Initiative, which says it aims to halt the decline of big cats in the wild. According to the initiative, recent estimates indicate there are likely some 30,000 African lions in the wild. Jan 28, 2016