The ground beneath your feet: soil erosion in Kenya's Tana River Basin

In Kenya’s Tana River watershed, changing weather can have a major knock-on impact on soil degradation. Research shows how upstream dynamics are contributing to soil sedimentation and degraded water quality in downstream urban water supplies. But there is a solution being piloted: The Nairobi Water Fund, set to launch next year (2015), will be a first for Africa. All eyes – and a lot of money – are resting on it.