Spending on environment yields big returns: report - Yahoo! News: "every dollar spent on clean water and sanitation in the Third World, for instance, could bring $14 in benefits ranging from lower health care costs to higher work productivity and school attendance....
Every dollar invested in fighting land degradation and desertification, like building terraces to stop hillside erosion, could generate at least $3 in benefits...
And every dollar invested in protecting coral reefs could generate $5, ranging from scuba-diving tourism to renewable fish stocks....
The carbon storage or 'sequestration' potential of forests ranges between $360 and $2,200 per hectare."