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Two Tusked Narwhal
The narwhal tusk is actually one of two teeth. In males, the tusk protrudes from...
The amount of carbon dioxide (CO2) in the atmosphere has been measured at Mauna Loa...
Pine Island Glacier
Pine Island Glacier, in the Antarctic, is changing quickly due to warming water. In...
Bull kelp (Nereocystis) becomes less valuable to grazers as it quickly rots. ...
A stormy sea lashes the village of Shismaref, Alaska, where the coastline has...