The wait for news has been agonizing for the families of the passengers and crew.
Among them, three U.S. citizens, including Philip Wood.
His brother told CNN yesterday that the family is "just relying on faith."
Matthew McConkey's friends Muktesh Mukherjee and Xiaomo Bai boarded Malaysia Airlines Flight 370 on Saturday morning.
Oscar Pistorius remained composed as the focus of his murder trial shifted from forensics back to the athlete's history with guns.
The one-time Olympian was seated next to a green plastic bucket after he was unable to stomach the gory description of his girlfriend's death during yesterday's testimony.
Robyn Curnow is OutFront in Pretoria South Africa.
Four days after the Malaysia Airlines Flight 370 went missing, there is still no sign of the plane.
According to a Malaysian air force official, the plane was way off course when it disappeared. It's forced authorities to shift the focus of their search. They're now looking at areas hundreds of miles from the original flight path.
Here's what we know:
-The passenger jet took off from Kuala Lumpur on Saturday at 12:41 am local time heading for Bejing.
-About an hour into the flight, the transponder was either turned off or stopped working.
-The plane changed course, which the Malaysian Air Force says it knows from radar, since the transponder was off.
-At 2:40 a.m. local time, radar lost track of the jet.
-At that moment the plane was off the island of Pulau Perak.
Another significant development: CIA Director John Brennan refusing to rule out terrorism as a possible cause of the plane's disappearance.
OutFront with his take: Jeremy Bash, former Chief of Staff at the Department of Defense and the CIA.
There are more questions in the disappearance of Malaysia Airlines flight 370.
Officials say the plane was hundreds of miles off course, and its transponder, which signals its location to the ground, was turned off or stopped working just as it changed course.
Tom Foreman has been looking into what might have happened.
A former Boeing 777 pilot, Mark Weiss, gives his take.
The director of the CIA is leaving open the possibility that terrorism may have been why Malaysia Airlines Flight 370, with 227 passengers on board, vanished without a trace.
It is the same belief that quickly followed the explosion of TWA Flight 800 off the coast of New York's Long Island. That crash in July of 1996 killed 230 passengers and crew.
In the days that followed the Flight 800 crash, scores of eyewitnesses came forward, describing what they said was a streak of light moving toward the jet shortly before it burst into flames.
David Mattingly covered the TWA Flight 800 crash extensively for CNN and is OutFront.