Giving young children regular bedtimes could help improve their brain function, new research suggests.
In a study of more than 10,000 children over ten years, scientists found that inconsistent bedtimes are linked to children's cognitive development and are warned there could be "knock-on" health effects throughout life.
More top news
The American president is making a state visit to see the Queen in June.
The suicide bombers involved in Sri Lanka's Easter Sunday attacks were from affluent families and had studied abroad including in the UK.
There were no political decisions of any substance taken over Easter, meaning some big decisions have been put on hold.