Guardian Angels is a group of watering cans, which will be on North Road Roundabout. They appear white by day but light up at night, with fibre-optic cables giving the appearance of water.
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A student who describes herself as "one of the lucky ones" was one of hundreds of people gathered at Grey's Monument at 11 o'clock.
The Queen has paid a visit to Royal Manchester Children's hospital where she met young people injured in Monday night's terror attack.
Scientists from Newcastle University believe they have found an easy way to validate the authenticity of any paper document.