Ditch day 2009 was May 27, 2009. A classic from the past. Our stack involved a multi-storied wooden puzzle and the strong chance we would be taped to a tree upside down.
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Shit, when suffocated (anaerobic decomposition), produces methane that can be used as fuel to power engines. The catchall name for this is biogas. Biogas projects have a history in India.
We come across this very depressing article about how Detroit is becoming 'unsettled', in that it is suffering from a massive population decrease, leading to some unprecedented solutions:
Archaeology Magazine's July/August issue (#63:4) has a lot of Old World articles which made it particularly interesting to me.
[Udated below (Sept 5, 2013)]