Alternate timeline (The Pyramid at the End of the World)

In an alternate timeline predicted by the Monks, the Earth was ravaged by a mutated strain of Raoultella planticola.

A series of unfortunate events
In 2017, two scientists at Agrofuel Research Operations were experimenting on genetically modifying raoultella planticola bacteria to break down the root system of a plant. However, Erica's glasses were inadvertently broken by her husband, forcing her to rely on Douglas instead to program how much of EC 31 enzyme they would spray. However, as Douglas had been drinking his vision was blurred and he misplaced a decimal point and instead of making it 11.89, it became 118.9. As a result, the bacteria became far stronger than intended, strong enough to break down plants and humans exposed to it, turning them into gunk.

Shortly after the new bacteria was created, it killed Douglas, its inadvertent creator. Much of the research staff fled aside from Erica who attempted to stop the bacteria from escaping when the lab's ventilation system automatically cycled. However, Erica was unable to prevent the release of the bacteria upon the Earth. (TV: The Pyramid at the End of the World)

Destruction of all life on Earth
Loose upon the Earth, the bacteria spread, breaking down all living things and wiping out all life on the planet. Within a year, the Earth was "as dead as the Moon" with a few dead trees amongst the devastation appearing to be the only things that did not appear to have been broken down completely. (TV: The Pyramid at the End of the World)