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Worldwide, we use 1,500 km3 of water every year

70% for agriculture

20% for industry

10% for domestic use

Quantity of water (in litres) needed to produce

1 kg of potatoes

290 L

1 kg of cotton

10,000 L

1 kg of beef

15,415 L

Water reuse (after treatment) by type of use

29% other

19% for industry

20% for irrigating green spaces

32% for agricultural irrigation


Environmental impact of the global food system


+ 25 % d émission de GES

+ 14 % de prélèvement d eau

69 % de prélèvement

d eau

28 % d émission

de GES

Global population Global hunger

suffers from hunger, which represents 821 million people

one human being in nine

151 M d enfants de moins de

cinq ans sont trop petits pour leur

âge en raison de malnutrition

2.5 billion

6.1 billion

9.8 billion


Quantity of feed needed to produce 1 kg of animal mass

10 kg Beef

2.5 kg Chicken

1.7 kg Crickets

1 - Including the production and processing of animal feed, enteric fermentation, manure storage and processing and meat transport. 2 - Country-Specific Dietary Shifts to Mitigate Climate and Water Crises , Global Environmental Change, August 2019.

Others rely on edible insects. Particularly high in proteins, vitamins and mineral salts, insects can be reared with far less impact on the environment than traditional livestock.

Outside countries where insect eating is a secular tradition (ants in Mexico, grilled cockroaches in Thailand, etc.), the trend is only showing up in the West. Some restaurants already offer insects, and major retailers are getting in on the act: Sainsbury s, the UK s second biggest supermarket chain, sells bags of roasted crickets as a snack. But these are not just isolated examples. According to Meticulous Market Research, in ten years time, 730,000 tonnes of edible insects will be produced, compared with 50,000 today. And more people are believing in it: SUEZ has acquired a stake in Nextalim, a company specialising in entomology, which has developed a solution based on rear g flies to convert the biowaste into proteins for animal production. A real circular solution!

Whatever happens, as the French writer and economist Jacques Attali notes in his latest book, Histoires de l alimentation (Food Stories), Our food model can no longer last. And it is definitely the whole food chain, from what we eat to how we produce it, that needs to be reinvented.