Leonardo DiCaprio joins climate change protesters in New York
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Climate change summit: Global rallies demand action

Street protests demanding urgent action on climate change have attracted hundreds of thousands of marchers in more than 2,000 locations worldwide.

In Manhattan, organisers said some 310,000 people joined a march that was also attended by UN chief Ban Ki-moon and actor Leonardo DiCaprio.

The day of action came as world leaders gathered in New York ahead of a UN climate summit.

Roger Harrabin reports.

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