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Showing releases 441-450 out of 471 releases.
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Public Release: 16-Feb-2005
Nature
The oldest Homo sapiens
When the bones of two early humans were found in 1967 near Kibish, Ethiopia, they were thought to be 130,000 years old. A few years ago, researchers found 154,000- to 160,000-year-old human bones at Herto, Ethiopia. Now, a new study of the 1967 fossil site indicates the earliest known members of our species, Homo sapiens, roamed Africa about 195,000 years ago.
National Science Foundation, L.S.B. Leakey Foundation, Natiopnal Geographic Society, Australian National University
Contact: Frank Brown
fbrown@mines.utah.edu
801-581-8767
University of Utah
Public Release: 15-Feb-2005
Astronomical Journal
NASA observatory confirms black hole limits
The very largest black holes reach a certain point and then grow no more. That's according to the best survey to-date of black holes made with NASA's Chandra X-ray Observatory. Scientists also discovered previously hidden black holes well below their weight limit.
Contact: Megan Watzke
mwatzke@cfa.harvard.edu
617-496-7998
Chandra X-ray Center
Public Release: 15-Feb-2005
Melas, Candor and Ophir Chasmas: Centre of Valles Marineris
These images, taken by the High Resolution Stereo Camera (HRSC) on board ESA's Mars Express spacecraft, show the central part of the 4000-kilometre long Valles Marineris canyon on Mars.
Contact: Guido de Marchi
guido.de.marchi@esa.int
31-715-658-332
European Space Agency
Public Release: 15-Feb-2005
Space 'eye' for textiles
An artificial eye developed for Earth observation is now being employed to recognise colour variations in dyed fabrics: a critical element of textile production. This could significantly reduce the 160 million metres of dyed fabrics discarded annually in Europe with high environmental costs.
Contact: Pierre Brisson
pierre.brisson@esa.int
31-715-654-929
European Space Agency
Public Release: 14-Feb-2005
Adaptive Behavior
Robots that act like rats
Robots that act like rat pups can tell us something about the behavior of both.
National Science Foundation
Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
Public Release: 14-Feb-2005
Nature
Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers
A new study investigating the respiratory system of insects may have solved a mystery that has intrigued physiologists for decades: why insects routinely stop breathing for minutes at a time.
National Science Foundation
Contact: Iqbal Pittalwala
iqbal@uci.edu
949-824-3969
University of California - Irvine
Public Release: 11-Feb-2005
A glimpse into the life of a physicist
Over 30 physicists from different countries are keeping a weblog for a year. Three Dutch physicists, Alex, Maaike and Frank from the NWO institute NIKHEF, are among those taking part. You can follow their experiences at www.quantumdiaries.org. On the site there is a biography and the latest events are illustrated with photos and videos.
Contact: Anne Mieke van den Bergen, Coordinator Quantum Diaries Neder
bergen@interactions.org
31-641-512-999
Netherlands Organization for Scientific Research
Public Release: 11-Feb-2005
Pediatric Orthopaedics
Emory researchers find more evidence for children's growth spurts, pain
The existence of growth spurts and growing pains in children may be perpetually evident to parents, but their cause has lacked scientific explanation. A new study now sheds some light on this childhood phenomena.
Contact: Beverly Cox Clark
bclark2@emory.edu
404-712-8780
Emory University Health Sciences Center
Public Release: 11-Feb-2005
Archaeometry
Chinese used diamonds to polish sapphire-rich stone in 2500 BC
Researchers have uncovered strong evidence that the ancient Chinese used diamonds to grind and polish ceremonial stone burial axes as long as 6,000 years ago -– and incredibly, did so with a level of skill difficult to achieve even with modern polishing techniques. The finding, reported in the February issue of the journal Archaeometry, places this earliest known use of diamond worldwide thousands of years earlier than the gem is known to have been used elsewhere.
Harvard University's Asia Center, Materials Research Science and Engineering Center, Princeton University's Department of Physics
Contact: Steve Bradt
steve_bradt@harvard.edu
617-496-8070
Harvard University
Public Release: 11-Feb-2005
Nature
Simulations show how growing black holes regulate galaxy formation
Results explain supermassive black holes and star distribution in nearby galaxies
Contact: Dr. Volker Springel
volker@mpa-garching.mpg.de
49-893-000-02238
Max-Planck-Gesellschaft
Showing releases 441-450 out of 471 releases.
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