multifoliaterose, thanks for the link to GiveWell - I find it much more useful than Charity Navigator.

Unintended consequences need not be bad consequences. Given the relationship between health and birth rates, I'm aware of much more evidence pointing to the decrease than the increase of Malthusian problems by improving health. But then, given this data presented by Hans Rosling, Malthusian problems may not be relevant in much of the world.