Seeing how software is developed and how everyday that goes by our life depends more on it, I'm afraid that the next world meltdown won't be caused by a war but by bad software.
Not only are our lives increasingly dependent of software, everything around us is. Nowadays, even TVs have software updates. WTF?! It won't be soon until even our coffee machine will crash and deprive us from the much needed caffeine. How will we be able to work without coffee?
Honestly, I think the major concern today isn't global warming. We all should care about how good software is! If people burst when they have to ctrl+alt+del their computer just to get back into Facebook, imagine what will happen if you car, pacemaker, whatever crashes.
Seriously. Stop playing pretend engineers.
(Link to post: http://andretavares.com/2012/07/13/world-war-3-bad-software/)