成人快手

Sewage sludge is a valuable fertiliser. More than three and a half million tonnes of it is spread on arable land in the UK every year. But a report commissioned by the Environment Agency raises serious concerns about the long-term safety and regulation of the practice.
The Trump administration is scrapping legislation protecting America's streams and wetlands, in a move that is angering environmentalists.
A team from the University of East London is working to create a sustainable alternative to peat, by re-wetting soils and growing sphagnum moss in fields, on a commercial scale.

Presented by Anna Hill and produced by Beatrice Fenton.