Related topics: climate change · earth · nasa · carbon dioxide · atmosphere

Commercial satellite race raises calls for more regulations

Rapidly evolving technology and space debris reported in several places around the world—including pieces of a Chinese Long March 5B Rocket in the Indian Ocean—signal the need for a new era for regulation of space, Flinders ...

Rapid warming in the Gulf of Maine reverses 900 years of cooling

Rapid 20th century warming in the Gulf of Maine has reversed long-term cooling that occurred there during the previous 900 years, according to new research that combines an examination of shells from long-lived ocean quahogs ...

Researchers unveil key processes in marine microbial evolution

A study published recently in Nature Ecology and Evolution has unveiled some of the key processes in marine microbial evolution. According to the study, led by the Uppsala University (Sweden) and with the participation of ...

NOAA still expects above-normal Atlantic hurricane season

Atmospheric and oceanic conditions still favor an above-normal 2022 Atlantic hurricane season, according to NOAA's annual mid-season update issued today by the Climate Prediction Center, a division of the National Weather ...

Microbes emit nitrogen oxides—perhaps more than you think

Microbes emit nitrogen oxides, or NOx. This is important because it involves surface-earth nitrogen (N) cycle, which strongly interacts with environmental quality, food production, biosphere and climate changes. A study led ...

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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.

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