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Mnemiopsis leidyi is a species of ctenophore, or comb jelly, that is native to the western Atlantic Ocean and invasive in many European seas.

Invasion of the Ctenophores

Greek scientists protect the Aegean sea from a predatory invader.

Feature Article

Dec. 28, 2020

The icebreaker Aurora Australis churns through pack ice surrounding East Antarctica

In the Zone

Sea ice may underpin the survival of Antarctic seabirds.

Feature Article

Dec. 28, 2020

Frost clings to an eddy covariance tower in Barrow, Alaska.

In the Arctic Darkness

Beneath a frozen surface, stirrings.

Feature Article

Dec. 28, 2020

Prayer flags frame Ama Dablam Peak in the Nepalese Himalaya.

Himalaya's Heat Pump

Polluted air over Asia is changing patterns in remote mountain ranges.

Feature Article

Dec. 28, 2020

As the seasons change from summer to winter, forests slow down their growth and absorb much less carbon from the atmosphere.

Hidden Carbon

Satellites measure the give and take between trees and temperatures.

Feature Article

Dec. 28, 2020

Heavy winds and stormy seas cause the cargo ship Rena to run aground on October 5, 2011, spilling its cargo and eventually sinking.

Heavy Weather, High Seas

Can dangerous sea states be predicted?

Feature Article

Dec. 28, 2020

A mountain gorilla nestles within dense vegetation in the Mgahinga Gorilla National Park in Uganda.

Heart of Drought

A mighty forest fades in the Congo.

Feature Article

Dec. 28, 2020

This angiogram, an X-ray technique using an injected dye, reveals a healthy human heart.

Heart Disease is in the Air

The air you breathe could be harming your heart.

Feature Article

Dec. 28, 2020

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