All of a sudden, they are there. Just a moment ago, helpers had cut a cocoa pod and draped it on the table. They had straightened the cube-shaped seats while wistfully staring at the half-empty aisles. Everything was still being set up and food was still cooking in kettles on this morning of the International Green Week (IGW) – but out of the blue, the area of BMZ Booth 107 in Hall 10.2 fills up all at once: The invasion of schoolchildren begins. ‘Girls, an egg’, shouts a ten-year-old girl. A fourth grade class from the Berlin Primary School at the Brandenburg Gate spreads out in the booth of the BMZ (Federal Ministry for Economic Cooperation and Development) and the two charities, ‘Brot für die Welt’ and Misereor. ‘An egg?’ asks the friend who just showed up. ‘Look – it’s right here’, says the first. Both are standing in front of a wooden table with a palm-sized white cardboard sign with the imprint of a brown egg on it. One of the girls reads: ‘How much virtual water is hidden behind these products?’ ‘Hmm. An egg comes from a chicken’, says the other kid, ‘and it certainly drinks a lot.’