Dry Horizons

We head to the west of France to speak to farmers using the ‘dry farming’ technique. The region is facing the lowest rainfall season in nearly twenty years.

In Israel’s Negev desert, farmers are combating water scarcity by using salty water to grow tomatoes. Our Israel correspondent Gallagher Fenwick also came across a fish farm, where the owner thinks the desert conditions are perfect for breeding fish on a large scale.

And a Peruvian environmentalist has come up with a simple, but potentially genius idea, to revitalise the Peruvian glaciers. Eduardo Gold's project involves painting the mountains white so that solar energy is reflected back into space and the areas cools down. We check out the progress so far.