I spend as much time reading news stories as almost anyone. But when the NYT broke this news suggesting the co-pilot of the Germanwings deliberately crashed the plane, it took my breath away: “A senior French military official involved in the investigation described a ‘very smooth, very cool’ conversation between the pilots during the early part of the flight … Then the audio indicated that one of the pilots left the cockpit and could not re-enter. ‘The guy outside is knocking lightly on the door, and there is no answer … And then he hits the door stronger, and no answer. There is never an answer. You can hear he is trying to smash the door down.”

+ Flight 4U 9525: What happened in the final 30 minutes.

+ Buzzfeed: What do we know about co-pilot Andreas Lubitz.

+ Wired: It’s remarkably easy to lock a pilot out of the cockpit.

+ NPR: Pilots downing their planes is unusual, but not unprecedented.

+ BBC: Germanwings crash latest updates.