 Norwegian Prime Minister Jens Stoltenberg visited Troll in January 2008, when he among other things opened TrollSat.At the same time, as part of the International Polar Year, a Norwegian – United States expedition traveled from Troll to the Amundsen–Scott South Pole Station and back.On 23 February 2009, Norwegian Minister of the Environment Erik Solheim hosted a meeting for environment ministers from 15 countries to discuss climate change and learn about recent research in the field.