15 years ago a small group of the Czech scientists visited the meeting of European plant exophysiologists in Viterbo starting a new EU projects on elevated CO2 effects. Because of personal involvement of prof. Paul Jarvis, the Czech group was incorporated into this type of European ecophysiological research. On the occasion of the 15th anniversary was prepared a conference covering the topics from stress physiology and elevated CO2 effects from leaves to ecosystems up to impact of climate change on ecosystems. Key findings in regulatory and stress physiology, plant-to-plant interactions and responses to changing environment with emphases on single and/or combined effects of CO2, water and temperature were presented. and Michal Marek.