Meet the man growing vegetables in the most northerly human settlement on Earth.
The Arctic town of Longyearbyen is a hostile natural environment for plants, with no daylight for 3 months each year.
Residents rely on air freight for much of their produce, and Ben Vidmar wants to make it more sustainable. Can he make a difference?
Video produced by Daniel South and Trystan Young. Listen to more stories from Newshour.