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After Mastodons and Mammoths, a Transformed Landscape
Roughly 15,000 years ago, at
the end of the last ice age,
North America's vast
assemblage of large animals
-- including such iconic
creatures as mammoths,
... > full story
Rich Ore Deposits Linked to Ancient Atmosphere
Much of our planet's mineral
wealth was deposited
billions of years ago when
Earth's chemical cycles were
different from today's.
Using geochemical clues from
... > full story
Mysteriously Warm Times in Antarctica
A new study of Antarctica's
past climate reveals that
temperatures during the warm
periods between ice ages
(interglacials) may have
been higher than previously
thought. The latest analysis
... > full story
Diatoms Reveal Climate Changes
Some 500 years ago there was
a change in the circulation
in the atmosphere over
Scandinavia. This probably
led to increased amounts of
winter precipitation in
northern Sweden for a
... > full story
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Research Challenges for Understanding Landscape Changes Identified
November 18, 2009 — Nine research challenges and four research initiatives that are poised to advance the study of how Earth's landscapes change were unveiled by the National Research ... > full story -
How Much Water Does the Ocean Have?
November 17, 2009 — The calculation of variations in the sea level is relatively simple. It is by far more complicated to then determine the change in the water mass. A team of geodesists and oceanographers have now, ... > full story -
Optical Properties of the Antarctic System and New Radiation Information
November 16, 2009 — The Antarctic system comprises of the continent itself, Antarctica, and the ocean surrounding it, the Southern Ocean. In a new study, measurements were made during three Austral summers to study the ... > full story -
Lab Machine to Study Glacial Sliding Related to Rising Sea Levels Created
November 15, 2009 — Researchers have created a glacier in a freezer that could help scientists understand how glaciers slide across their beds. That could help researchers predict how climate change accelerates glacier ... > full story -
Cave Study Links Climate Change to California Droughts
November 15, 2009 — California experienced centuries-long droughts in the past 20,000 years that coincided with the thawing of ice caps in the Arctic, according to analysis of stalagmites from a cave in the Sierra ... > full story -
Warmer Means Windier on Lake Superior, World's Biggest Lake
November 15, 2009 — Rising water temperatures are kicking up more powerful winds on Lake Superior, with consequences for currents, biological cycles, pollution and more on the world's largest lake and its smaller ... > full story -
Greenland Ice Cap Melting Faster Than Ever
November 13, 2009 — Satellite observations and a state-of-the art regional atmospheric model have independently confirmed that the Greenland ice sheet is losing mass at an accelerating rate, according to a new study. ... > full story -
Professor to Predict Weather on Mars
November 13, 2009 — Is there such a thing as "weather" on Mars? There are some doubts, considering the planet's atmosphere is only 1 percent as dense as that of the Earth. Mars, however, definitely has clouds, ... > full story -
Are Earth's Oceans Made Of Extraterrestrial Material?
November 11, 2009 — Contrary to preconceived notions, the atmosphere and the oceans were perhaps not formed from vapors emitted during intense volcanism at the dawning of our planet. Scientists now suggest that water ... > full story -
Central Africa's Tropical Congo Basin Was Arid, Treeless In Late Jurassic
November 11, 2009 — The lush, tropical Congo Basin was much different 150 million to 200 million years ago when dinosaurs roamed Gondwana, the single continent formed by Africa and South America. Geochemical analysis of ... > full story
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