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Searching for a dementia cure

A Cambridge charity is at the forefront of the search to find a cure for dementia after pledging to spend 100 million pounds on research.

Alzheimer's Research UK today launched its Defeat Dementia campaign which aims to speed up the process of finding new treatments and preventions.

It came as the Prime Minister told a G8 summit a "big, bold, global push" was needed to beat the disease. Claire McGlasson reports.