Polymetallic nodules are potato-sized formations on the ocean floor that are rich in minerals such as nickel, cobalt, and manganese. Their concentration of rare, economically important minerals has made the nodules the focus ...
Earth Sciences
15 hours ago
0
57
With typhoon Yagi battering Asia, storm Boris drenching parts of Europe, extreme flooding in the Sahel and hurricane Helene racing towards Florida, September so far has been a very wet month.
Environment
17 hours ago
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1
In a new study, a team of researchers suggests that 4 billion years ago, plate tectonics likely looked closer to what we experience today than previously thought. The team published its findings in the Proceedings of the ...
Earth Sciences
18 hours ago
1
32
Immediate action is needed at all levels to protect communities in the Asia Pacific from sea levels that are rising significantly faster than the global average, say climate scientists ahead of the next key UN climate summit.
Environment
Sep 25, 2024
0
9
A Dartmouth-led study on ice cores from Alaska and Greenland found that air pollution from the burning of fossil fuels reaches the remote Arctic in amounts large enough to alter its fundamental atmospheric chemistry. The ...
Earth Sciences
Sep 25, 2024
0
25
The last ice age peaked around 20,000 years ago and was marked by extensive glaciation and dramatic climate shifts that reshaped Earth's oceans, landscapes and ecosystems. A study led by the University of Arizona suggests ...
Earth Sciences
Sep 25, 2024
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7
The ocean's twilight zone is deep, dark, and—according to new research—iron deficient. No sunlight reaches this region 200 to 1,000 meters below the sea surface, where levels of iron, a key micronutrient, are so low that ...
Ecology
Sep 25, 2024
0
74
Sophisticated analysis of tiny bubbles of ancient gas trapped in volcanic rocks, combined with new geophysical modeling, has cast new light on long-held assumptions about the deep Earth.
Earth Sciences
Sep 25, 2024
1
38
They look like tiny dragons, they dine on Portuguese man o' wars, they're venomous and they're turning up on Outer Banks beaches.
Ecology
Sep 25, 2024
0
38
In a report published in Marine Pollution Bulletin, researchers from Kyushu University have for the first time, provided a clear numerical target for global efforts to tackle marine plastic pollution. By mapping the flow ...
Environment
Sep 24, 2024
0
1
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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