The helicopter from a Chinese icebreaker has arrived to help evacuate passengers and crew from the stranded Akademik Shokalskiy ship.
Professor Chris Turney posted footage of the helicopter arriving on the group's YouTube account.
More top news
One of the most notorious Mexican drug lords still at large has been captured by soldiers at a seafood restaurant in a picturesque town.
A dossier of online abuse directed at the parents of Madeleine McCann is being examined by police.
World leaders meet in London to tackle the Ebola outbreak in west Africa which has so far claimed at least 3,000 lives.