WATERLOO, Ontario, Feb. 4 (UPI) -- Dramatic changes in the freezing and thawing of arctic lakes have created a regional winter season 24 days shorter than a half century ago, scientists say.
Climate change has also dramatically affected the thickness of lake ice at the coldest point in the season, a study led by the University of Waterloo in Ontario, Canada, found; in 2011, arctic lake ice was almost 15 inches thinner than it was in 1950.