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A Piece of Primitive Earth
Topic: Geology
08/15/10
Researchers have found a primitive Earth mantle reservoir on Baffin Island in the Canadian Arctic. The discovery will help researchers understand the composition of the original, early Earth.

Gondwana's Gyration
Topic: Geology
08/13/10
New data shows that the supercontinent, Gondwana, underwent a 60-degree rotation across Earth's surface during the Cambrian period. This continental movement may have had a profound effect on the evolution of Earth's biosphere and climate.

Glaciation that Snowballed
Topic: Geology
05/02/10
Climate change that occurred some 720 million years ago is providing scientists with insight into what can happen when the Earth's carbon cycle is altered. The research could help astrobiologists understand the history of Earth's climate and processes that could shape the future of life on our planet.

Supervolcanic Extinctions
Topic: Geology
04/25/10
'Supervolcano' eruptions in Earth's past have played a role in shaping the evolution of life by causing mass extinctions. Scientists are now trying to understand what triggered these enormous eruptions and how likely they are to occur again in the future.

Not Set in Stone
Topic: Geology
03/28/10
For the past 12,000 years, the Earth's climate has been relatively stable and hospitable. That time - the Halocene epoch - may be coming to an end as a new period in geologic history begins. Welcome to the Anthropocene - the "human epoch".

Não Definido em Rocha
Topic: Geology
03/28/10
Nos últimos 12.000 anos, o clima da Terra tem sido relativamente estável e hospitaleiro. Este tempo – a época do Holoceno – pode estar chegando a um fim enquanto um novo período na história geológica começa. Bem vindo ao Antropoceno – a “época humana”.

Earth's Movers and Shakers
Topic: Geology
03/24/10
A new model of the Earth is helping scientists understand how our planet's surface moves and deforms. The model shows Earth's tectonic plates as a dynamic, 3D puzzle, and could help astrobiologists understand the intricate connections between our planet's physical properties and its habitability for life.

Time Quake
Topic: Geology
03/05/10
The magnitude 8.8 earthquake that struck Chile may have had dramatic global consequences. Scientists believe that the quake was strong enough to change the Earth's rotation and may have shortened the length of an Earth day.

Why Earth Held Its Breath
Topic: Geology
02/19/10
Scientists have proposed an answer to a long-standing question concerning the formation of the Earth's interior and the gases that lie trapped deep beneath our planet's surface. The research will help astrobiologists understand how our planet formed and ultimately became habitable for life.

Oxygen and Ore
Topic: Geology
11/24/09
Much of Earth's mineral wealth was deposited billions of years ago when chemical cycles on our planet were very different than today's. Recently, scientists used geochemical data from minerals to yield surprising information about conditions on the ancient Earth.

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