http://www.theguardian.com/environment/earth-insight/2014/mar/14/nasa-civilisation-irreversible-collapse-study-scientists The NASA-funded Handy Model? David Ritchie, Gast-by-Flabber, Barely Above Water, Sun-er-set, TR4 WB1------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html