Sustainable living difficult? Not at all. When you follow the easy-close-to-home tips from this Sustainable calendar week by week, you're already well on your way. Handy: you can also track your ecological footprint in this calendar with the goal of reducing it next year. For example, how much energy you use, how many garbage bags you produce per week, and how often you choose the bike over the car. Next year, you track the score again, challenging yourself each year to live a little more sustainably! Without a year, so it can be used endlessly! With the cooperation of Milieu Centraal.