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Obama vows US 'will do more' to battle climate change

President Barack Obama on Wednesday pledged that the United States "will do more" to tackle the threat of climate change and said the world must do likewise before it is too late.

Space & Earth - Environment

12 hours ago

5 / 5 (2)

NCAR joins massive field campaign to examine summertime air in Southeast

Taking part in the largest U.S. air quality field project in decades, the National Center for Atmospheric Research (NCAR) is working with partners to study pollution in the Southeast. The study looks at the ...

Space & Earth - Earth Sciences

12 hours ago

not rated yet

Ocean

An ocean (from Greek Ωκεανός, Okeanos (Oceanus)) is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (an area of some 361 million square kilometers) is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. More than half of this area is over 3,000 meters (9,800 ft) deep. Average oceanic salinity is around 35 parts per thousand (ppt) (3.5%), and nearly all seawater has a salinity in the range of 30 to 38 ppt.

This text uses material from Wikipedia, licensed under CC BY-SA

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