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Distribution of glaciers in North America (a) in the late twentieth century, and (b) 18,000 years ag
A 3-tonne (3.0-long-ton; 3.3-short-ton) great white shark off Isla Guadalupe
Indian elephant, from a Lombardy manuscript, circa 1400.
The declining age of menarche over the past 150 years has been measured in many European countries,
The Hotair long noncoding RNA regulates chromatin