News tagged with climatic history
Earth history and evolution
In classical mythology, the cypress tree is associated with death, the underworld and eternity. Indeed, the family to which cypresses belong, is an ancient lineage of conifers, and a new study of their evolution affords a ...
May 03, 2012 |
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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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Fossilized pollen reveals climate history of northern Antarctica
A painstaking examination of the first direct and detailed climate record from the continental shelves surrounding Antarctica reveals that the last remnant of Antarctic vegetation existed in a tundra landscape ...
Space & Earth / Earth Sciences
Jun 27, 2011 |
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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 |
4.5 / 5 (6) |
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Study finds fish of Antarctica threatened by climate change
A Yale-led study of the evolutionary history of Antarctic fish and their "anti-freeze" proteins illustrates how tens of millions of years ago a lineage of fish adapted to newly formed polar conditions – ...
Feb 13, 2012 |
3.5 / 5 (6) |
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The Earth's new water budget
Investigating the history of water on Earth is critical to understanding the planet's climate. One central question is whether Earth has always had the same amount of water on and surrounding it, the same ...
Space & Earth / Earth Sciences
Mar 05, 2012 |
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Unravelling the causes of the Ice Age megafauna extinctions
Was it humans or climate change that caused the extinctions of the iconic Ice Age mammals (megafauna) such as the woolly rhinoceros and woolly mammoth?
Nov 04, 2011 |
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Volcanoes wiped Neanderthals out, research suggests
New research suggests that climate change following massive volcanic eruptions drove Neanderthals to extinction and cleared the way for modern humans to thrive in Europe and Asia.
Other Sciences / Archaeology & Fossils
Sep 30, 2010 |
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Extreme global warming in the ancient past
Variations in atmosphere carbon dioxide around 40 million years ago were tightly coupled to changes in global temperature, according to new findings published in the journal Science. The study was led by sci ...
Space & Earth / Earth Sciences
Nov 10, 2010 |
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Oldest US natural history museum offers rare peek
(AP) -- The Academy of Natural Sciences has never been one to brag. Its 225,000 annual visitors may associate the nation's oldest natural history museum solely with dioramas and dinosaurs, but behind the ...
Mar 24, 2012 |
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Greenland's pronounced glacier retreat not irreversible
In recent decades, the combined forces of climate warming and short-term variability have forced the massive glaciers that blanket Greenland into retreat, with some scientists worrying that deglaciation could become irreversible. ...
Space & Earth / Earth Sciences
Jan 31, 2012 |
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Southwest pueblo-dwellers key to modern climate policy?
Vulnerability to climate change presents policy challenges to local, state, regional, national and international entities, particularly at a time when the public and policy-makers still struggle conceptually with the complexities ...
Feb 19, 2012 |
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Extinctions, loss of habitat harm evolutionary diversity
A mathematically driven evolutionary snapshot of woody plants in four similar climates around the world has given scientists a fresh perspective on genetic diversity and threats posed by both extinctions and ...
Dec 16, 2010 |
4.3 / 5 (3) |
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Mission critical: Species explorers propose steps to map biosphere
Scientists say worldwide collections, existing experts and technology make charting 10 million species in less than 50 years achievable; a necessary step to sustain planet’s biodiversity.
Apr 02, 2012 |
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Diversification of land plants
Researchers have reconstructed phylogenetic relationships among all 706 families of land plants.
Apr 05, 2012 |
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