The Business Secretary Vince Cable will show his support for a new research project in County Durham. He is due to visit the Caterpillar factory in Peterlee, which will receive a share of £40m.
Researchers at the plant will look at energy efficiency in heavy goods vehicles, and hope eventually to build and sell a new, cleaner engine for big vehicles.
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Emergency services, including a hazardous response team, were called to a property on Rainton Street on Friday morning.
The 14-year-old boy was arrested after Cleveland Police Dog Rocky, tracked down his hiding place in a garden half a mile away.
Andrew Deluen, 33, was hit by two cars on Monday morning. A man who he was walking with at the time went on to steal one of the cars.