As for organs, traits, etc., being "for" something, the notion may be a useful shorthand, but shouldn't be taken too seriously, if only because of the ubiquitous phenomenon of exaptation.

Sea level rise and destruction of water resources as glaciers melt alone may have horrendous human consequences.

The kind of work that should be the main part of life is the kind of work you would want to do if you weren't being paid for it. It’s work that comes out of your own internal needs, interests and concerns.

The costs of the Bush-Obama wars in Iraq and Afghanistan are now estimated to run as high as $4.4 trillion - a major victory for Osama bin Laden, whose announced goal was to bankrupt America by drawing it into a trap. The 2011 military budget - almost matching that of the rest of the world combined - is higher in real terms than at any time since World War II and is slated to go even higher .

There are huge areas where the human mind is apparently incapable of forming sciences, or at least has not done so. There are other areas - so far, in fact, one area only [physics] - in which we have demonstrated the capacity for true scientific progress.

I am not sure just what Marx had in mind when he wrote that "philosophers have hitherto only interpreted the world in various ways; the point is to change it." Did he mean that philosophy could change the world, or that philosophers should turn to the higher priority of changing the world? If the former, then he presumably meant philosophy in a broad sense of the term, including analysis of the social order and ideas about why it should be changed, and how. In that broad sense, philosophy can play a role, indeed an essential role, in changing the world.

Wanton killing of innocent civilians is terrorism, not a war against terrorism.