February 28, 2019 1:05 PM
Arctic Ocean could experience ice-free summers within next 20 years
The Arctic Ocean could experience ice-free summers within the next 20 years, much earlier than previously predicted. A new study has warned that unless human greenhouse gas emissions are greatly reduced, the Arctic will be nearly free of sea ice during the summer by the middle of this century. <br />'' <br />''In addition to the human-caused warming, the melting of ice may also occur due to a natural, long-term warming phase in the tropical Pacific. Ocean temperatures in the...