Nature World News: Most of the United States is gearing up for the fast approaching summer months, traces of the icy winter far behind them, but the Great Lakes are just thawing out after a record-breaking seven months of being frozen.
The NOAA declared all the Great Lakes officially ice-free Wednesday morning after more than 80 percent of its surface was encrusted with ice for seven months - an occurrence that hasn't happened since the 1970s, according to Live Science.
Lake Superior, the deepest, largest and...