Terms and Conditions apply. For challenges funded under Copernicus, only nationals from European Union (EU) Member States and countries associated with EU’s space programme (currently Iceland and Norway) are eligible to participate. For challenges funded under Destination Earth, only nationals from European Union (EU) Member States and countries associated with EU’s Digital Europe Programme (currently Iceland, Norway, and Lichtenstein) are eligible to participate. For challenges funded under ECMWF, bot nationals and residents from ECMWF Member States and Co-operating states are eligible to participate.