How Much for this Mountain Forest?

The downward flow of water from the Eastern Arc Mountains of Africa generates up to half of Tanzania's power and provides nearly all of Dar es Salaam's drinking water. As logging and agriculture move up the slopes, however, they destroy the natural ecosystems that support the ancient catchments – resulting in torrents in the wet season and trickles in the dry. Can valuing those ecosystem services lead to their salvation?

In Search of the Missing Bobolink
We used to find these little birds nurturing their young in the prairie grass of North America, but now we're likely to find them in hayfields – often after mowing machines and grazing animals found them first. That prompted EcoAsset Markets and the University of Rhode Island to experiment with a "nature services exchange" that compensates farmers for idling their machines during mating season.