Mr Omar said the regime sees this ceasefire "as a suicide plan" because withdrawing the military from the streets and allowing independent observers into the country would result in a mass reaction from Syrian public which would be "political suicide" so they would not go as far as that.

BBC: Syria ceasefire would be 'political suicide' for Assad

The third mistake was that, because the workers were allowed to bypass the time-consuming mixing process in the tower, with its automatic controls for preventing such things happening, they were free to dump their material into a vessel that was not designed to prevent the accumulation of a critical mass sufficient to support a chain reaction.

ECONOMIST: All over in a flash

After rudimentary purification and regeneration of the biocatalysts, the CO2 is transferred to a Biocatalytic Reactor Matrix where mass quantities of biocatalysts function in a matrix of liquid reaction chambers breaking down CO2 and turning it into hydrocarbons.

CNN: Turning carbon dioxide into fuel