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

Five things to know about Greenland

US President Donald Trump has confirmed he is keen to buy Greenland, an autonomous Danish territory rich in natural resources and of increasing geopolitical relevance as the Arctic ice sheet melts.

Experts discuss food security from oceans

The world will have an additional 2 billion people to feed over the next 30 years—and doing that without decimating the planet's resources will require exploring as many options as possible. Yet, a significant option—seafood—is ...

Origin of massive methane reservoir identified

New research from Woods Hole Oceanographic Institution (WHOI) published Aug. 19, 2019, in the Proceedings of the National Academy of Science provides evidence of the formation and abundance of abiotic methane—methane formed ...

Study reveals profound patterns in globally important algae

A globally important ocean algae is mysteriously scarce in one of the most productive regions of the Atlantic Ocean, according to a new paper in Deep Sea Research I. A massive dataset has revealed patterns in the regions ...

Designing new ways to make use of ocean plastic

Beachcombing has long been a part of life for island communities. On the southwestern edge of Scarp, a small, treeless island off the coast of Harris in Scotland's Outer Hebrides, the Mol Mòr ("big beach") was where locals ...

Fukushima disaster: Key takeaways 8 years later

In March and April of 2011 the Fukushima Nuclear Power Plant disaster resulted in what was the largest ever accidental release of radioactive material into the ocean. Zofia Baumann, assistant professor of marine sciences, ...

page 1 from 23

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