News tagged with snowball earth
The oldest evidence of bioturbation on Earth
The Ediacaran Period, an interval in Earth's history after the Snowball Earth glaciations but before the Cambrian radiations, marks the introduction of complex macroscopic organisms synchronously in unrelated groups. It has ...
Space & Earth / Earth Sciences
Mar 20, 2012 |
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What really happened prior to 'Snowball Earth'?
In a study published in the journal Geology, scientists at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science suggest that the large changes in the carbon isotopic composition of car ...
Space & Earth / Earth Sciences
Jan 27, 2012 |
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Snowball Earth hypothesis challenged
The hypothesis that the Earth was completely covered in ice 635 million years ago has received a serious blow. The atmospheric concentration of CO2 during that period was much lower than previously thought, ...
Space & Earth / Earth Sciences
Oct 12, 2011 |
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Research shows how life might have survived 'snowball Earth'
Global glaciation likely put a chill on life on Earth hundreds of millions of years ago, but new research indicates that simple life in the form of photosynthetic algae could have survived in a narrow body ...
Space & Earth / Earth Sciences
Oct 11, 2011 |
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Life after Snowball Earth: New fossils suggest rapid recovery of life after global freeze
The first organisms to emerge after an ancient worldwide glaciation likely evolved hardy survival skills, arming themselves with tough exteriors to weather a frozen climate.
Space & Earth / Earth Sciences
Jun 15, 2011 |
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Study debunks theory on end of 'Snowball Earth' ice age
A team of scientists led by researchers from Caltech report in this week's issue of the journal Nature that the rocks on which much of a theory on how the "Snowball Earth" ice age ended was based were formed ...
Space & Earth / Earth Sciences
May 25, 2011 |
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Oldest fossils of large seaweeds, worm-like animals tell story of ancient oxygen
Almost 600 million years ago, before the rapid evolution of life forms known as the Cambrian explosion, a community of seaweeds and worm-like animals lived in a quiet deep-water niche near what is now Lantian, ...
Space & Earth / Earth Sciences
Feb 23, 2011 |
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Thawing a planet-sized snowball
These days the climate news is all about global warming, but global freezing was the biggest climate worry in Earth's distant past.
Space & Earth / Earth Sciences
Nov 05, 2010 |
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New evidence supports 'Snowball Earth' as trigger for early animal evolution
A team of scientists, led by biogeochemists at the University of California, Riverside, has found new evidence linking "Snowball Earth" glacial events to the rise of early animals.
Space & Earth / Earth Sciences
Oct 27, 2010 |
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Delineating primary and secondary organic carbon in neoproterozoic glacial sediments
How do we begin to understand what early life was like on Earth about 700 million years ago as our planet shifted from an oxygen-free and probably ice-covered realm to the oxygen-rich world that we know today?
Space & Earth / Earth Sciences
Jun 16, 2010 |
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Global glaciation snowballed into giant change in carbon cycle
For insight into what can happen when the Earth's carbon cycle is altered -- a cause and consequence of climate change -- scientists can look to an event that occurred some 720 million years ago.
Space & Earth / Earth Sciences
May 01, 2010 |
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New evidence hints at global glaciation 716.5 million years ago
Geologists have found evidence that sea ice extended to the equator 716.5 million years ago, bringing new precision to a "snowball Earth" event long suspected to have taken place around that time.
Space & Earth / Earth Sciences
Mar 04, 2010 |
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The greenhouse gas that saved the world
When Planet Earth was just cooling down from its fiery creation, the sun was faint and young. So faint that it should not have been able to keep the oceans of earth from freezing. But fortunately for the creation of life, ...
Space & Earth / Earth Sciences
Aug 18, 2009 |
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Microfossils challenge prevailing views of the effects of 'Snowball Earth' glaciations on life
New fossil findings discovered by scientists at UC Santa Barbara challenge prevailing views about the effects of "Snowball Earth" glaciations on life, according to an article in the June issue of the journal ...
Space & Earth / Earth Sciences
May 26, 2009 |
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