The environmental impact of veganism, Monitoring ammonia on farms, Train drivers hitting livestock
A train driver talks about hitting livestock on rural lines, and find out what farmers can do to make railways safer.
Caz Graham concludes a week of programmes about veganism with a debate about the the environmental impact of different foods.
We join a train driver on a rural line in Scotland, and find out what happens when livestock get onto the tracks.
And can technology designed for use in space help farmers reduce their ammonia emissions?
Presented by Caz Graham. Produced by Heather Simons.