大象传媒

A new report measuring nitrogen pollution says it's costing 280 billion pounds a year. That's 拢650 annually for every person in Europe. Two thirds of the problem is being attributed to farming. Charlotte Smith asks an author of the European Nitrogen Assessment what needs to be done and whether British farmers are doing enough.

Around a third of beef cattle and 93% of dairy animals are bred using artificial insemination. Charlotte visits a farm which chooses to keep a breeding bull and asks if there's still a need for them on farms in the UK.

Presented by Charlotte Smith and produced by Anne-Marie Bullock.