Even the slightest changes above and below ground level may be detected and measured by remote sensing. Norut develops new models for synthetic aperture radar (SAR). We use earth observation for surveillance of landslides and to map changes in snow, ice and vegetation. Norut is steadily using unmanned aircraft systems (UAS) in new fields: environmental monitoring, climate measurement, civil preparedness and data collection. This is a unique technology development, which is making a difference in our everyday life in the north.