northern hemisphere
- n the hemisphere that is to the north of the equator
northern hemisphere :
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- Harbor porpoises can thank their worst enemy, the killer whale, for their success
The harbor porpoise (Phocoena phocoena) is a whale species that is doing quite well in coastal and busy waters. They are found in large numbers throughout the Northern Hemisphere from Mauritania to Alaska, and now researchers explain why these small toothed whales are doing so well: The harbor porpoise can thank their worst enemy, the killer whale, for their success.
June 13, 2013 - Science Daily - NASA Checks Tundra for Greenhouse Gases
Tons of carbon and methane lie under the Arctic tundra, trapped in ice. The frozen ground, called permafrost, covers nearly a quarter of the Northern Hemisphere.
June 12, 2013 - LiveScience.com via Yahoo! News - Northern Hemisphere air pollution said responsible for Africa drought
SEATTLE, June 7 (UPI) -- Northern Hemisphere air pollution is partly responsible for decades of drought in central Africa that reached its worst point in the 1980s, scientists say.
June 7, 2013 - UPI