News tagged with ice age
Russians revive Ice Age flower from frozen burrow
It was an Ice Age squirrel's treasure chamber, a burrow containing fruit and seeds that had been stuck in the Siberian permafrost for over 30,000 years. From the fruit tissues, a team of Russian scientists ...
Feb 20, 2012 |
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Genetic safety in numbers, platypus study finds
(Phys.org) -- Platypuses on the Australian mainland and in Tasmania are fighting fit but those on small islands are at high risk of being wiped out from disease, according to a University of Sydney study.
May 18, 2012 |
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Sunspots could soon disappear for decades: study
(PhysOrg.com) -- Sunspot formation is triggered by a magnetic field, which scientists say is steadily declining. They predict that by 2016 there may be no remaining sunspots, and the sun may stay spotless ...
Space & Earth / Space Exploration
Sep 15, 2010 |
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Ancient tree-ring records from southwest U.S. suggest today's megafires are truly unusual
Today’s mega forest fires of the southwestern U.S. are truly unusual and exceptional in the long-term record, suggests a new study that examined hundreds of years of ancient tree ring and fire data from ...
May 16, 2012 |
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Glaciers melting faster than originally thought: study
(PhysOrg.com) -- A team of scientists from Aberystwyth University, the University of Exeter and Stockholm University, led by Welsh scientist and Professor Neil Glasser, have released at study published in ...
Space & Earth / Earth Sciences
Apr 04, 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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Climate played big role in Vikings' disappearance from Greenland
The end of the Norse settlements on Greenland likely will remain shrouded in mystery. While there is scant written evidence of the colony's demise in the 14th and early 15th centuries, archaeological remains ...
Other Sciences / Archaeology & Fossils
May 30, 2011 |
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Carbon cycling was much smaller during last ice age than in today's climate: study
Atmospheric carbon dioxide (CO2) is one of the most important greenhouse gases and the increase of its abundance in the atmosphere by fossil fuel burning is the main cause of future global warming. In past ...
Space & Earth / Earth Sciences
Nov 20, 2011 |
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Archaeologists discover Jordan's earliest buildings
(PhysOrg.com) -- Some of the earliest evidence of prehistoric architecture has been discovered in the Jordanian desert, providing archaeologists with a new perspective on how humans lived 20,000 years ago.
Other Sciences / Archaeology & Fossils
Feb 20, 2012 |
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Scientists detect huge carbon 'burp' that helped end last ice age
(PhysOrg.com) -- Scientists have found the possible source of a huge carbon dioxide 'burp' that happened some 18,000 years ago and which helped to end the last ice age.
Space & Earth / Earth Sciences
May 27, 2010 |
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NASA Study Finds Atlantic 'Conveyor Belt' Not Slowing
(PhysOrg.com) -- New NASA measurements of the Atlantic Meridional Overturning Circulation, part of the global ocean conveyor belt that helps regulate climate around the North Atlantic, show no significant ...
Space & Earth / Earth Sciences
Mar 26, 2010 |
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First plants caused ice ages: research
New research reveals how the arrival of the first plants 470 million years ago triggered a series of ice ages. Led by the Universities of Exeter and Oxford, the study is published today (February 1, 2012) in Nature Geoscience.
Space & Earth / Earth Sciences
Feb 01, 2012 |
4.7 / 5 (12) |
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Ice Age coyotes were supersized, fossil study reveals
Coyotes today are pint-sized compared to their Ice Age counterparts, finds a new fossil study. Between 11,500 and 10,000 years ago — a mere blink of an eye in geologic terms — coyotes shrunk to their ...
Other Sciences / Archaeology & Fossils
Feb 27, 2012 |
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Archaeologists find clues to Neanderthal extinction
(PhysOrg.com) -- Computational modeling that examines evidence of how hominin groups evolved culturally and biologically in response to climate change during the last Ice Age also bears new insights into the extinction of ...
Other Sciences / Archaeology & Fossils
Jan 16, 2012 |
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Deepest core drilled from Antarctic Peninsula; may contain glacial stage ice
Researchers here are hopeful that the new core they drilled through an ice field on the Antarctic Peninsula will contain ice dating back into the last ice age. If so, that record should give new insight into ...
Space & Earth / Earth Sciences
Apr 12, 2010 |
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Ice age
The general term "ice age" or, more precisely, "glacial age" denotes a geological period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in an expansion of continental ice sheets, polar ice sheets and alpine glaciers. Within a long-term ice age, individual pulses of extra cold climate are termed "glaciations". Glaciologically, ice age implies the presence of extensive ice sheets in the northern and southern hemispheres; by this definition we are still in an ice age (because the Greenland and Antarctic ice sheets still exist).
More colloquially, when speaking of the last few thousand years, "the" ice age refers to the most recent colder period (or freezing period) with extensive ice sheets over the North American and Eurasian continents: in this sense, the most recent ice age peaked, in its Last Glacial Maximum about 20,000 years ago. This article will use the term ice age in the former, glaciological, sense: glacials for colder periods during ice ages and interglacials for the warmer periods.
For more information about Ice age, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
