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Message: 1
From: National Science Foundation Update <nsf-update@xxxxxxx>
Date: Wed, 12 Aug 2009 16:58:48 -0500 (CDT)
Subject: Methane Clouds Observed Near Titan's Equator May Explain Presence of Riverbeds on the Surface
Methane Clouds Observed Near Titan's Equator May Explain Presence of Riverbeds on the Surface
On Titan, Saturn's largest moon, methane clouds drift through a dense, nitrogen-rich atmosphere, clustering mainly in the polar regions. Methane lakes dot Titan's surface, also at high latitudes. Closer to the moon's equator, by contrast, clouds appear rarely if at all, and the surface seems arid. But in January 2005, the Huygens probe, after detaching from the Cassini spacecraft and descending through Titan's atmosphere, gave planetary scientists their first close-up view of the
moon's ...
This is an NSF News and NSF Discoveries item.
Message: 2
From: National Science Foundation Update <nsf-update@xxxxxxx>
Date: Wed, 12 Aug 2009 17:10:31 -0500 (CDT)
Subject: Hurricane Seasons Are More Active
Hurricane Seasons Are More Active
For many Americans who live on the Atlantic coast, Andrew, Ivan and Katrina are more than just names--they are reminders of the devastating impact of cyclonic activity in the region during hurricane season. If it seems like hurricane seasons have been more active in recent years, you're on to something. According to a paper published in the August 13 issue of Nature, the frequency and strength of these powerful storms has grown in recent decades.
"We are at levels now ...
This is an NSF News item.
Message: 3
From: National Science Foundation Update <nsf-update@xxxxxxx>
Date: Wed, 12 Aug 2009 17:12:15 -0500 (CDT)
Subject: Storm Clouds Over Titan
Taking advantage of advanced techniques to correct distortions caused by Earth's atmosphere, astronomers used the NSF-supported Gemini Observatory to capture the first images of clouds over the tropics of Titan, Saturn's largest moon.
The images clarify a long-standing mystery linking Titan's weather and surface features, helping astronomers better understand the moon of Saturn, viewed by some scientists as an analog to Earth when our planet was young.
The effort also served as ...
This is an NSF News item.
Message: 4
From: National Science Foundation Update <nsf-update@xxxxxxx>
Date: Wed, 12 Aug 2009 17:17:15 -0500 (CDT)
Subject: Uncovering the Secrets of Ulcer-causing Bacteria
Uncovering the Secrets of Ulcer-causing Bacteria
A team of researchers from Boston University, Harvard Medical School and Massachusetts Institute of Technology recently made a discovery that changes a long held paradigm about how bacteria move through soft gels. They showed that the bacterium that causes human stomach ulcers uses a clever biochemical strategy to alter the physical properties of its environment, allowing it to move and survive and further colonize its host.
The Proceedings of the National Academy of Sciences ...
This is an NSF News item.
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