Forests for the future: Kenya's carbon credit scheme

When 61-year old Mercy Joshua was young, the vast forests of southeastern Kenya teemed with wildlife, but decades of unchecked deforestation by locals have devastated the land.

She watched forests dwindle and rivers dry up across her homeland of Kasigau -- a semi-arid savanna grassland dotted with shrubs, woodland and small rugged hills -- as people cut down the trees to scratch a living by selling them for firewood.