We are students from different schools, different cultures and different countries. Our schools have got a partnership and we have been chosen to take a part in an european project Erasmus+.The mission is to develop a concept of an optimized Greenhouse (greenECOFRIENDLYhouse). Each school has got an assigned task to complete. German students have to experiment with biogas and want to find out if it would be possible to turn the organic waste from a greenhouse into a useful biogas. Students from Spain have to search for a possibility of using the seawater as drinking water. Plastic recycling is the topic of french students. And the last task from luxembourgish students is automation of a greenhouse.