How Inmarsat hacked their data to find MH370.
And you thought you'd never need trigonometry outside of high school!
I'm not one to link to the Daily Mail too often, but this write-up is mostly devoid of sensationalism and has lots of information on the disappearance and crash of MH370. Just ignore the ridiculous headline. Tl;dr: an explosion or fire on board that rendered passengers and crew alike unconscious, leaving the plane on an autopilot route to nowhere, is the most likely explanation.