Scientists who monitor Arctic sea ice report that it has hit the second-lowest level on record this year. Only 3.74 million square kilometers of Arctic waters were covered with ice as of Sept. 15, marking the second time in a span of more than 40 years of satellite measurements that yearly minimum coverage has fallen below 4 million square kilometers, according to figures from the US National Snow and Ice Data Center.
click on title to read the article in Nature, one of the world’s leading science journal
