Why Venezuela's earthquake was so deadly: shallow, powerful and just seconds apart

The combination of two powerful, very shallow earthquakes just 39 seconds apart explains much of the devastation left by Wednesday's earthquake in north-central Venezuela, where the latest official toll exceeds 1,450 dead and 3,150 injured. The satellite images that have gradually emerged confirm a trail of collapsed buildings along the coast, the most densely populated and hardest-hit area.