At the end of time...

When all the forests have been torn up for grazing to produce Big Macs. When all that can be smote has been smitten. When all that can be fracked has been fraught. When North Korea has comprehensively nuked civilization. And a great darkness has fallen over the land. Yeah, verily, the rhubarb will lift up its head and regain its dominion.
 
 

(Some years ago the allotments across the road from our house were dug up and grassed over to extend the school playing field. Nine months later several clumps of rhubarb had thrust through the turf in an exuberant fashion!)