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There are of course numerous theories about the disappearance of MH370. But here comes a worrying one, if it turns out to be true, from a US pilot on mh370site. His theory, one of the simplest, is that its cargo of 200kg of lithium-ion batteries started to “react”, flooding the plane with carbon monoxide which disabled passengers and crew before catching fire. The co-pilot tried to turn back when he learned of the fire, but was overcome by fumes, leaving the aircraft on autopilot.

The pilot writes: “The freight forwarding business needs to be held to account for their actions and policies regarding shipment of hazardous cargo.”

This article makes it all sound like a fairly convincing theory, but there are so many out there…