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Hot Topic
Solar System
Earth
Geology
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Supervolcanic Extinctions
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| 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. |
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Not Set in Stone
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| 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". |
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Não Definido em Rocha
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| 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”. |
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Earth's Movers and Shakers
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| 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. |
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Time Quake
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| 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. |
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Why Earth Held Its Breath
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| 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. |
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Oxygen and Ore
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| 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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Volcanoes Set the Stage for an Ice Age
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| Topic: Geology |
10/28/09 |
| Researchers have discovered connections between volcanoes and a deadly ice age that occurred 450 million years ago. The study reports that the volcanoes may have release massive amounts of carbon dioxide, causing global warming. However, when they stopped erupting, an ice age began. |
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Battle of the Bands
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| Topic: Geology |
10/17/09 |
| Banded rocks scattered across the upper Midwest and elsewhere around the world are providing information about the environment of the early Earth. Once mined as a source of iron, these rocks can tell scientists about the geochemical conditions that existed on Earth more than 2 billion years ago. |
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Into the Mouth of a Volcano
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| Topic: Geology |
08/11/09 |
| NASA scientists are using high-tech 'spider' robots to monitor volcanoes on Earth. The low-cost sensors provide real-time monitoring of one of Earth's most challenging environments. The technology will help scientists studying processes on Earth - and could be used in locations beyond our own planet. |
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