Global Challenges Facing Cities Today

GZERO World went to the World Cities Summit in Medellin, Colombia and asked a bunch of big city mayors the same question: What are your priorities?

GZERO World with Ian Bremmer: watch now

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How to solve Colombia's cocaine problem

GZERO World Clips

The Graphic Truth: Sending money home

Closing the Gap
Live from the UN General Assembly: Rescuing a World in Crisis | Global Stage

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