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Wednesday, April 07, 2004

From EurekAlert http://www.eurekalert.org/pubnews.php
Public Release: 7-Apr-2004
Acoustical Society of America
Time-reversal acoustics research promises medical breakthroughs
By the technology known as time-reversal acoustics, sound waves – in exact reverse order from the original sound – echo directly and very precisely back to their source point. The technology promises a wide array of applications, including medical applications such as ultra-precise medical imaging, diagnostic techniques using ultrasound, and incision-free surgical techniques. A Stevens Institute of Technology senior scientist will present research on such potential breakthroughs at the next meeting of the Acoustical Society of America.
National Institutes of Health, Los Alamos National Laboratory, NASA, Stevens Institute of Technology

Public Release: 7-Apr-2004
London Journal of the Geological Society
UF study: Barren Siberia, of all places, may be original home to animal life
Trilobites, the primitive shelled creatures considered by many to be among the first animals to appear in the fossil record, may have originated in a place known today largely for its barren lifelessness: Siberia.

Public Release: 7-Apr-2004
Mammal Review
Why sloths do not sleep upside down
A new interpretation of established findings regarding the digestion of sloths illustrates that the interplay of posture, anatomy, the density of ingesta and gravity can provide a novel explanation of behavioural and morphological adaptations, as the stomach contents increase from its caudal towards its cranial portion. In sloths, this could be indicative of a stratification of ingesta occurring in the upright sitting posture adopted while resting, as opposed to their characteristic upside-down posture when moving.

Public Release: 7-Apr-2004
Ice melt may dry out US west coast
As Arctic sea ice melts over the next 50 years due to global warming, towns and cities along the west coast of the US could suffer a serious water shortage. Researchers from the University of California modelled the impact of sea ice changes on the world's climate. While Europe got off lightly, shrinking sea ice was likely to mean a drop in annual rainfall by as much as 30 per cent from Seattle to Los Angeles.
Banned Saudi novels thrive abroad - and at home
Outlawed works of fiction still make it into the hands of Saudis. By
Faiza Saleh Ambah

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