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CO2 ChallengeZwei große, grüne Blätter mit der Aufschrift "CO2 sparen: Leicht gemacht" in weißer Schrift.

The ecological footprint - small tips to save CO2!

Buying seasonal fruits and vegetables, taking the train on holiday, cycling instead of driving – saving CO2 is easy. There's so much we can do! There is also a mantra that we can always take to ...