The old mud has just broken a myth of ice 750,000 old

The evidence of the growth of algae and climatic simulations reveal that the Arctic had a seasonal ice, not a permanent ice platform, for a large part of the last 750,000 years. These ideas question longtime theories. For a long time, the researchers discussed the question of whether a thick and continuous ice shelf covered the entire Arctic Ocean at the time of the most extreme ice. […]