Earth

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    New research has revealed that processes in the Earth's core are responsible for variations in the length of day on our planet.
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    A new study is helping astrobiologists understand how early Earth was warm enough for life more than 3 billion years ago, even though the Sun was 20 percent dimmer than today.
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    The Earth system includes intricate interactions between everything from our planet's dynamic climate to geological and biological processes. A new study is helping astrobiolgists understand just how stable the Earth system is.
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    Scientists have discovered tiny bubbles of water found in quartz grains in Australia. The bubbles may hold the key to understanding what caused the Earth’s first ice age.
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    A potential culprit in several of the largest extinctions in Earth's history might also benefit the future of life on Earth. A new study indicates that low doses of 'sewer gas' could enhance plant growth for food and biofuel production.
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    Life as we know it on Earth would not be possible without the fragile layer of ozone 25 km above our planet's surface. NASA is now preparing to launch the most sophisticated space-based ozone sensor ever.
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    A new study shows that activity beneath the Earth's surface could have been responsible for ancient sea level rise and global warming at the Earth's surface.
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    New research might help explain how Earth sprung back after a period of extensive glaciation known as 'Snowball Earth.' The key may have been significant changes in the atmospheric conditions on the planet.
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    New research on a mineral called molybdenite is helping scientists understand how geological and biological processes have helped shaped the chemistry of planet Earth.
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    A new study is shedding light on one of Earth's enduring climate mysteries. Earth has flipped between 'greenhouse' and 'icehouse' states for the past 500 million years. This process may have been driven by episodic flare-ups of volcanoes at key locations around the planet.
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    A new study shows that Earth's core formed in the presence of more oxidizing conditions than previously thought. The study is helping scientists understand the distribution of planet-forming materials in the early Solar System.
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    Volcanic activity can cause short-term variations in climate. Now, new research shows that the reverse is also true.
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    Billions of years from now, life on Earth will be extinguished when the Sun becomes a Red Giant star. New research determines the last places life will exist before our planet is sterilized.
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    NASA is so sure the world won't come to an end on Dec. 21, 2012, they have already released this news item for the day after.
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    A new NASA study shows that dust rising above the world's deserts causes a more significant localized warming effect than previously thought.
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