Thousands attend a retreat in Derry named after Sister Clare, 10 years after her death in an earthquake in Ecuador.
Seven-time winner Ronnie O'Sullivan begins his bid for a record-breaking eighth World Snooker Championship title with a match against China's debutant He Guoqiang at the Crucible.
The UK could face some food shortages by the summer under a worst case scenario drawn up by officials.
The Office for National Statistics says the economy expanded by 0.5% in February.
BBC Verify analysis found more than 1,400 buildings had been destroyed since 2 March.