The idea was to bring together scientists from around Europe working at bridging the gap between leaf and ground level measurements and those from satellites. The 3 themes were the use of unpiloted aerial vehicles (UAVs) for making near remote sensing, canopy chlorophyll fluoresence and solar induced fluoresence as a way of measuring plant productivity and stress, and databases to store all the data that gets collected. It was really great to have an opportunity to consider these ecological and physiological questions at multiple scales.