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The Green Sahara, A Desert In Bloom
New North African climate
reconstructions reveal three
‘green Sahara’
episodes during which the
present-day Sahara Desert
was almost completely
covered with extensive
... > full story
The Earth After Us: What Legacy Will Humans Leave In The Rocks?
What will be the lasting
impression made by mankind -
100 million years hence?
"From the perspective of 100
million years in the future
... > full story
Geologists Dig Up One Of The Largest Lakes In The World, Dammed By Ice During Last Ice Age
Geologists are digging in
the bed on the western bank
of what was once a 700-800
kilometre-long lake along
the 62nd parallel in Russia.
... > full story
Why Is Greenland Covered In Ice? Changes In Carbon Dioxide Levels Explain Transition
A fall in levels of
atmospheric carbon dioxide,
close to that of
pre-industrial times,
explains the transition from
... > full story
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Species Extinction By Asteroid A Rarity
October 10, 2008 — New research argues in favor of a "sick earth" mechanism for most extinctions, rather than external event like an asteroid ... > full story -
Ice Core Studies Confirm Accuracy Of Climate Models
September 15, 2008 — An analysis has been completed of the global carbon cycle and climate for a 70,000 year period in the most recent Ice Age, showing a remarkable correlation between carbon dioxide levels and ... > full story -
New Climate Record Shows Century-long Droughts In Eastern North America
August 23, 2008 — A stalagmite in a West Virginia cave has yielded the most detailed geological record to date on climate cycles in eastern North America over the past 7,000 years. The new study confirms that during ... > full story -
Humans Implicated In Prehistoric Animal Extinctions With New Evidence
August 12, 2008 — Scientists sheds new light on the role that our ancestors played in the extinction of Australia's prehistoric animals. Their study suggests that the mass extinction of Tasmania's large prehistoric ... > full story -
Antarctic Fossils Paint Picture Of Much Warmer Continent
August 6, 2008 — Scientists working in an ice-free region of Antarctica have discovered the last traces of tundra -- in the form of fossilized plants and insects -- on the interior of the southernmost continent ... > full story -
Tracking Down Abrupt Climate Changes: Rapid Natural Cooling Occurred 12,700 Years Ago
August 4, 2008 — Researchers have shown, for the first time, that an extremely fast climate change occurred in Western Europe. This took place long before human-made changes in the atmosphere, and is causatively ... > full story -
Cold And Ice, Not Heat, Episodically Gripped Tropical Regions 300 Million Years Ago
August 1, 2008 — Geoscientists have long presumed that, like today, the tropics remained warm throughout Earth's last major glaciation 300 million years ago. New evidence, however, indicates that cold temperatures in ... > full story -
Insect Biodiversity In Amazon May Be Result Of Ice Age Climate Change And Ancient Flooding, Not River Barriers
July 29, 2008 — Ice age climate change and ancient flooding -- but not barriers created by rivers -- may have promoted the evolution of new insect species in the Amazon region of South America, a new study suggests. ... > full story -
Explosion In Marine Biodiversity Explained By Climate Change
July 28, 2008 — A global change in climate could explain the explosion in marine biodiversity that took place 460 million years ago. Researchers have now found evidence of a progressive ocean cooling of about ... > full story -
Past Climate Change: Continental Stretching Preceding Opening Of The Drake Passage
July 25, 2008 — Due to the impact of global warming, it has become essential to understand the causes and processes involved in past climate changes. One of the most prominent events in Earth's climatic evolution ... > full story
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