Thousands have taken to Twitter as the hashtag #WalkTogether trended across London on the 10th anniversary of the London 7/7 bombings in which 52 people were killed. It urges commuters to leave their Tubes a stop early and walk, remembering the afternoon of the attack when thousands took to London’s streets as public transport network shut.

Violinist Won Hyung Joon wants to bring North and South Korean musicians together next month to perform on each side of the world's most heavily armed border. Standing in the way is the rivals' long, frustrating inability to move past their painful shared history.