President Obama has taken the states of Washington (12 electoral votes), California (55) and Hawaii (4), according to projected results reported by NBC.
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New test could help doctors identify the signs of lung cancer up to five years before the disease shows up on traditional scans.
The Police Federation is pushing for a wider rollout of Tasers , and a new model, the X2, is awaiting Home Office approval.
Charity says social media is helping fuel a nation of 'deeply unhappy' children as figures show rise in number hospitalised over self-harm.