A team of scientists have taken to the streets of the Newcastle to promote "Street Science".
It's part of the British Science Festival which is taking place on Tyneside this week.
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A joint bid could see Hartlepool, Middlesbrough, Stockton, Redcar and Cleveland, Darlington the region become a cultural capital.
Witnesses say they were told to stay in their homes after the incident last night.
A teenager told a court today (July 27) that he wrote about planning a violent attack at his former college so people would talk to him.