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This image of Turkey offers a comparison of the color of the Black Sea (top of the image), which shows a phytoplankton bloom, and the Mediterranean Sea (bottom of the image)

Spin Cycle

So much depends on the ocean's deep churn.
Feature Article
Dec. 28, 2020
A statue on the spire of Duomo Cathedral overlooks the Milan skyline.

Soiled Soils

Invisible pollutants lurk under Italy’s most populous valley.
Feature Article
Dec. 28, 2020
A man walks through the Acropolis while smoke plumes billow from a forest fire near Athens on July 25, 2007.

Smoke over Athens

The effects of forest fires show up in a multi-satellite view of pollution.
Feature Article
Dec. 28, 2020
A tsunami strikes northeast Japan after the 2011 Tohoku Earthquake, generating waves up to 133 feet high along some areas of the coast.

Sizing a Tsunami

GPS helps scientists quickly forecast massive waves.
Feature Article
Dec. 28, 2020
Lascar volcano in Chile is the most active volcano in the central Andes, with several eruptions occurring during the 1990s.

Silent Signals

Synthetic aperture radar data and scientists in detecting the ground deformation associated with earthquakes and volcanic eruptions.
Feature Article
Dec. 28, 2020
Ice re-grows in a lead between two sea ice floes in the Beaufort Sea, Arctic Ocean, in March 2013.

Signs of Snow

Aircraft help probe the surface of Arctic sea ice.
Feature Article
Dec. 28, 2020
Pacific bluefin tuna are prodigious swimmers, able to cross the Pacific Ocean in less than a month.

Shadowing the Tuna Boats

Logbooks, satellites, and game theory help steward tuna in the Pacific.
Feature Article
Dec. 28, 2020
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