Occupation: Urban farmer

The International Agricultural Show, which opens in Paris on Saturday, February 26, is the biggest of its kind in the world. Thousands of farmers and food producers will be displaying everything from prize milk cows to the latest technology to feed the world's population.

One problem that feeding ourselves causes the planet is the huge amounts of carbon dioxide - CO2 - which belches out from the ships and lorries that bring our food from all over the world. How can we reduce that?

Well, check out this week's WoW! News App, to meet Fabien and Benoît. They farm mushrooms, right in the heart of a city. Mushrooms work well as a city crop because they grow in the dark - Benoît and Fabien grow them in a disused army bunker. And it's just a few minutes by bike to take their produce to their customers' dinner tables.

Their part of growing movement called "urban farming". From New York to Paris to Brussels to Singapore, people are finding ways to use up space on rooftops, to combine fish farming with salad crops (fish poo is a great fertilizer!) and many other innovations that cut down on all that CO2 being burned.

Why not get involved in growing food at home, at school or in shared gardens in your town? Get inspired with the WoW! News App!