Complex sentence: In January 2012 Gunhild and husband Petter participated in Al Gore's Climate Reality Project's expedition to the Antarctic shooting an inspirational video for Norway's Earth Hour.
Split into simpler sentences: In January 2012 Gunhild and husband Petter participated in Al Gore's Climate Reality Project's expedition to the Antarctic. While in the Antarctic Stordalen and Gore shot an inspirational video for Norway's Earth Hour.