Earth

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    Prior to the 'Great Oxidation Event', when Earth's atmosphere became rich in oxygen, reserves of the gas may have been stored in the oceans. The evidence of 'oxygen oases' in the oceans can be seen in tiny aerobic organisms that evolved to survive on extremely
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    Using measurements from space, scientists have confirmed that, although the surface of the Earth is constantly changing, the planet is not expanding.
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    New research shows how the Earth's tides have changed dramatically over thousands of years - and may change again in the future.
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    In an exclusive podcast for astrobio.net, Dr. David Grinspoon, astrobiology curator at the Denver Museum of Nature & Science, discusses our violent Earth. He explains why earthquakes, severe weather, and other aspects of the dynamic environment may be necessary for life to exist.
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    New research is helping scientists understand fundamental properties of the Earth, such as the spread of sea floors and melting of the outer core.
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    New research shows that the Earth's core is simultaneously melting and freezing due to the circulation of heat in our planet's mantle.
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    A new study is causing scientists to re-think the events that led to the end of a 'Snowball Earth' ice age some 600 million years ago.
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    New visualizations of the Earth from space provide a unique image of how the Earth has changed over the past 750 million years.
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    Observations from ESA's GOCE satellite have provided the best ever map of Earth's gravity. The research could further our understanding of the Earth.
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    Scientists agree, in no uncertain terms, that the Moon did not cause the earthquake in Japan. Understanding the causes and effects of earthquakes is important for astrobiologists who are trying to determine how events on Earth will shape life's future on our planet.
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    The magnitude 8.9 earthquake in Japan was the result of thrust faulting between the Pacific and North American plates. The shift of mass made the Earth's rotation speed up by 1.6 microseconds.
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    By studying meteorites, scientists have discovered new information about how the Earth formed. Studying the early stages of planet formation can help astrobiologists determine how and where to search for habitable planets in the Universe.
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    Long-awaited data collected by ESA's CryoSat mission has now been released to the public. Early results are helping scientists understand circulation in the Arctic Ocean and the links between climate and arctic ice. The data will help astrobiologists understand what is in store for the
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    A change in the Earth´s orbit, many scientists believe, transformed the "Green Sahara" into what is now the largest desert on the planet. While scientists are still trying to find out if the slow shift in orbit had rapid or gradual environmental consequences, they say
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    Chemists have uncovered a chemical reaction that could allow scientists to study the ancient atmospheres of Earth and Mars. The technique could yield clues about past life on Earth - and the potential for past life on Mars.
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