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Rethinking Early Atmospheric Oxygen
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| Topic: Geology |
04/28/13 |
| Summary: Scientists have provided new information about the relationship between oxygen in Earth's early atmosphere and the sulfur cycle. The study could shed light on how oxygen accumulated in Earth's atmosphere - an event that had profound implications for life on our planet. |
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How Rocky Planets Get Their Atmospheres
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| Topic: Geology |
04/11/13 |
| Summary: A new study suggests that the way carbon moves from within a planet to the surface plays a big role in the evolution of a planet's atmosphere. If Mars released much of its carbon as methane, for example, it might have been warm enough to support liquid water. |
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Sending Unmanned Aircraft to Investigate Volcanoes
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| Topic: Geology |
04/03/13 |
| Summary: NASA researchers have deployed repurposed military UAVs to study a volcano. The technology could be effective for gathering data about volcanic ash and gases from otherwise inaccessible locations. |
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A 'Lubricant' for Earth's Tectonic Plates
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| Topic: Geology |
03/23/13 |
| Summary: Scientists have discovered a layer of liquefied molten rock in Earth's mantle. This magma layer could act as a lubricant for our planet's tectonic plates. |
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Boom Goes the Megavolcano
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| Topic: Geology |
03/22/13 |
| Summary: By studying locations as widespread as New Jersey and North Africa, a team of scientists has found a link between one of Earth's largest mass extinctions and gigantic volcanic eruptions. The study could hint at how sudden climate shifts could affect life's future on Earth. |
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Studying Ancient Earth's Geochemistry
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| Topic: Geology |
01/21/13 |
| Summary: New research shows that some of the tectonic processes driving volcanic activity today were occurring as early as 3.8 billion years ago. The study provides new insight about the early environment of Earth. |
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Mining Ancient Ores for Clues to Early Life
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| Topic: Geology |
12/12/12 |
| Summary: Sulfide ore deposits from a mine in Canada confirm that oxygen levels on Earth 2.7 billion years ago were extremely low, but they also indicate that microbes were actively feeding on sulfate in the planet's oceans. |
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Crashing Waves Reveal Earth's Interior
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| Topic: Geology |
12/10/12 |
| Summary: A new technique could help scientists study structures beneath the Earth's surface by measuring tiny seismic waves created by ocean waves as they crash against the shore. |
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