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Latest Snowball Earth Stories

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2010-10-27 14:10:00

A spike in ancient marine phosphorus concentrations from 750 to 635 million years ago is linked to emergence of complex life, UC Riverside researchers say 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. The controversial Snowball Earth hypothesis posits that the Earth was covered from pole to pole by a thick sheet of ice lasting, on several occasions, for...

2010-10-26 02:47:46

New University of Florida research puts to rest the mystery of where old carbon was stored during the last glacial period. It turns out it ended up in the icy waters of the Southern Ocean near Antarctica. The findings have implications for modern-day global warming, said Ellen Martin, a UF geological sciences professor and an author of the paper, which is published in this week's journal Nature Geoscience. "It helps us understand how the carbon cycle works, which is important for...

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2010-08-18 06:15:00

Scientists have found fossils which suggest that animal life appeared on Earth millions of years earlier than previously thought, according to Princeton University and National Science Foundation (NSF) press releases published Tuesday. The fossils, which were described as "shelly" and are believed to have bellowed to primitive sponge-like creatures that dwelled in ocean reefs, were unearthed below 635 million year old South Australian glacial deposits. According to the NSF, those sponge-like...

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2010-06-18 09:40:33

Findings released during the annual Goldschmidt Conference at the University of Tennessee, Knoxville By examining 800,000-year-old polar ice, scientists increasingly are learning how the climate has changed since the last ice melt and that carbon dioxide has become more abundant in the Earth's atmosphere. For two decades, French scientist J©rôme Chappellaz has been examining ice cores collected from deep inside the polar ice caps of Greenland and Antarctica. His...

2010-06-16 21:42:59

Findings released during the annual Goldschmidt Conference at the University of Tennessee, Knoxville 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? One geochemist who decodes the early record of life on Earth has found a method featuring a combination of chemical analyses for a significantly clearer picture of this dynamic...

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2010-05-02 08:15:28

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. New data from a Princeton University-led team of geologists suggest that an episode called "snowball Earth," which may have covered the continents and oceans in a thick sheet of ice, produced a dramatic change in the carbon cycle. This change in the carbon cycle, in turn, may have triggered future...

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2010-03-05 07:33:29

Scientists find signs of 'snowball Earth' amidst early animal evolution 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. Led by scientists at Harvard University, the team reports on its work this week in the journal Science. The new findings -- based on an analysis of ancient tropical rocks that are now found in remote northwestern Canada --...

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2009-05-28 12:01:50

U.S. scientists are challenging the prevailing views of the effects of the so-called Snowball Earth glaciations on life on Earth. Researchers from the University of California-Santa Barbara analyzed microfossils found in rocks at the bottom of the Grand Canyon to challenge current theories concerning the effects of the glaciers occurring approximately 635 million to 726 million years ago. Those glaciations are thought to have been responsible for the widespread deaths of early life on Earth....

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2009-05-26 15:17:08

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 Nature Geoscience. By analyzing microfossils in rocks from the bottom of the Grand Canyon, the authors have challenged the view that has been generally assumed to be correct for the widespread die-off of early life on Earth. "Snowball Earth" is the popular term for glaciations that...

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2009-04-17 06:55:00

Scientists have once again found cause to marvel at the brilliant tenacity of life. In a small subterranean pool of highly concentrated salt water that hasn't seen the sun for some 1.5 million years, researchers have discovered flourishing colonies of previously unknown species microbes. The red water of Blood Falls that flows from the base of the Taylor Glacier in Antarctica has intrigued scientists since its discovery more than a century ago. A crew of scientists from Harvard and Dartmouth...


Latest Snowball Earth Reference Libraries

Geologic Clock With Events And Periods
2012-11-18 19:10:56

The Neoproterozoic is the third of three subdivisions of the Proterozoic Eon (occurring from 1 billion years ago to 542 million years ago). This terminal era of the Proterozoic is itself divided into three sub-periods called the Tonian, Cryogenian, and Ediacaran Periods. The most severe glaciation known in the geologic record occurred during the Cryogenian Period, when ice sheets reached the equator and formed a possible “Snowball Earth.” And the earliest fossils of multi-cellular life...

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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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