Search results for snowball earth:
Scientists study 'Snowball Earth'
Space & Earth / Earth Sciences
Nov 28, 2006 |
3.2 / 5 (19) |
0
Canadian scientists have determined the factors involved in ending a severe ice age 750 million years ago that nearly completely froze Earth's oceans.
Study heats up 'snowball Earth' debate
Space & Earth / Earth Sciences
Apr 01, 2008 |
4.1 / 5 (15) |
0
Research by University Professor Richard Peltier of physics reveals that the Earth’s surface 700 million years ago may have been warmer than previously thought.
Modern day scourge helped ancient Earth escape a deathly deep freeze
Space & Earth / Earth Sciences
Dec 01, 2008 |
3.7 / 5 (23) |
9
(PhysOrg.com) -- The planet’s present day greenhouse scourge, carbon dioxide, may have played a vital role in helping ancient Earth to escape from complete glaciation, say scientists in a paper published online ...
Researchers Find Ancient Evidence of 'Snowball Earth'
Space & Earth / Earth Sciences
Jul 11, 2008 |
4.3 / 5 (33) |
1
LSU scientist Huiming Bao, along with colleagues from UCLA and China, recently discovered some of the first atmospheric evidence in support of the “Snowball Earth” hypothesis. This theory suggests that Earth was entirely ...
Microfossils challenge prevailing views of the effects of 'Snowball Earth' glaciations on life
Space & Earth / Earth Sciences
May 26, 2009 |
4.1 / 5 (15) |
26
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 ...
The greenhouse gas that saved the world
Space & Earth / Earth Sciences
Aug 18, 2009 |
3.6 / 5 (9) |
7
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, ...
New evidence puts 'Snowball Earth' theory out in the cold
Space & Earth / Earth Sciences
Mar 23, 2007 |
4.4 / 5 (41) |
0
The theory that Earth once underwent a prolonged time of extreme global freezing has been dealt a blow by new evidence that periods of warmth occurred during this so-called 'Snowball Earth' era.
Large methane release could cause abrupt climate change as happened 635 million years ago
Space & Earth / Earth Sciences
May 28, 2008 |
4.1 / 5 (53) |
11
An abrupt release of methane, a powerful greenhouse gas, about 635 million years ago from ice sheets that then extended to Earth’s low latitudes caused a dramatic shift in climate, triggering a series of events ...
Geologists push back date basins formed, supporting frozen Earth theory
Space & Earth / Earth Sciences
Jul 03, 2008 |
4.5 / 5 (25) |
1
Even in geology, it's not often a date gets revised by 500 million years. But University of Florida geologists say they have found strong evidence that a half-dozen major basins in India were formed a billion ...
Signs point to sponges as earliest animal life
Biology /
Feb 04, 2009 |
4.3 / 5 (11) |
26
(PhysOrg.com) -- Even Charles Darwin was puzzled by the apparently sudden appearance in the fossil record of a great variety of multicellular creatures — a rapid blossoming known as the Cambrian explosion. ...
Our Ancestors Survived 'Snowball Earth'
Biology /
Jun 06, 2006 |
4.8 / 5 (14) |
0
It has been 2.3 billion years since Earth's atmosphere became infused with enough oxygen to support life as we know it. About the same time, the planet became encased in ice that some scientists speculate was more than a ...
Study Suggests Giant Space Clouds Iced Earth
Mar 04, 2005 |
not rated yet |
0
Eons ago, giant clouds in space may have led to global extinctions, according to two recent technical papers supported by NASA's Astrobiology Institute. One paper outlines a rare scenario in which Earth iced over during sno ...
Mass Extinctions, Ancient Viruses May Hold Clues to Life’s Origins
Apr 03, 2009 |
4.7 / 5 (30) |
16
(PhysOrg.com) -- Mass extinctions occur repeatedly, though irregularly, throughout Earth’s history, and occasionally these extinctions have been devastating to life on our planet - or have they? Extinction ...
Study Casts Doubt On 'Snowball Earth' Theory
Sep 30, 2005 |
5 / 5 (1) |
0
A study that applied innovative techniques to previously unexamined rock formations has turned up strong evidence on the "Slushball Earth" side of a decades-long scientific argument.
Evolutionary Accident Probably Caused The Worst Snowball Earth Episode, Study Shows
Aug 02, 2005 |
4.4 / 5 (8) |
0
For several years geologists have been gathering evidence indicating that Earth has gone into a deep freeze on several occasions, with ice covering even the equator and with potentially devastating consequences for life. ...
