There definitely was another thread, it was called "Missing Malaysian plane MH370". It was under "Everything Else".
They will NEVER know definitively what happened to that plane. This happened 4 years ago. They weren't designed to survive salinated water in some of the deepest water in the world for 4+ years. In the case of the "El Faro", a container ship that sank off the Bahamas in 2015, the VDR (voyage data recorder) was found 18 months later in 35,000' of salt water (the Caribbean Sea). The tapes yielded quality deemed "very poor", and that was after being in the water for 18 months, never mind four years. If MH370's CVR and Flight Data Recorder (I swear I'm going to have it out with autocorrect one day!) are ever found, they aren't going to provide any useful data. They had to extract info from "El Faro's" VDR using extraordinary measures, and most of the time they had no idea what anyone was saying. They got info only from conjecture. (Turned out that Hurricane Joaquin became a Cat IV hurricane faster than anyone expected, and the Captain was using maps dated from 12 hours before. Oops. 33 people perished when the old, dilapidated ship went down)
As far as MH370 goes, unless the plane and recorders are found with usable data, we won't know what happened to the plane. News media, particularly the Daily Mail (ugh), will drag out theories and pose them as truth, sometimes 3 or 4 times claiming new information. I haven't seen the CBS report but probably more of the same.
MH370 WILL go down as aviation's greatest unsolved mystery.
In Loving Memory of Timothy Houdek, October 22, 1969 - January 8, 2013
My awesome dad: Harry Houdek, September 8, 1933 - November 20, 2013
Words can't convey how much I miss you both. RIP with love.