Times analysis of air traffic recordings and flight data shows that outage-related problems persisted far longer than what the officials have acknowledged.
A series of unlucky factors — two earthquakes in rapid succession, a fault that ruptured toward Caracas, soft ground and the shallow depth of the earthquake — combined to make the Venezuela earthquakes unusually deadly.
Images and videos of the Manhattan building analyzed by The Times show that the structural columns buckled directly beneath where the recent addition was built.