Aerial footage from the NBC television network has revealed the scale of the damage caused by a tornado that flattened communities and claimed at least six lives in the US Midwest.
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Teenage schoolchildren who use e-cigarettes dramatically increase their chances of graduating to tobacco, research has shown.
A year after the launch of a landmark plan to tackle the crisis, leading figures say a "much more robust" strategy is needed.
A van ploughing into pedestrians in a busy area of Barcelona echoes the circumstances of atrocities that have hit several countries.