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As one investor told the Journal: “This is very much a man-made situation.”

Myers’ vision for the area included reintroducing animals that had once been native inhabitants, including tule elk and bighorn sheep, and obliterating man-made intrusions, such as a rock quarry, petroleum waste pits, fences and roads.

In the rural tranquillity of central Ukraine, this man-made canyon is the by-product of 61 years of mining.

"The Muan airport tragedy is a man-made disaster caused by the DP," read one comment on YouTube.

CalEarth has a long-standing practice of offering its online building curriculum for free to people who have been affected by natural or man-made disasters.