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Cave's climate clues show ancient empires declined during dry spell
The decline of the Roman and Byzantine Empires in the Eastern Mediterranean more than 1,400 years ago may have been driven by unfavorable climate changes. view more (2008-12-08)
Cassini's Infrared Camera Sees Tall Mountains on Saturn's Moon Titan
The infrared-sensitive camera on NASA's Cassini spacecraft has photographed the tallest mountains ever seen on Saturn's moon, Titan. view more (2006-12-13)
Solar System's Young Twin Has Two Asteroid Belts
Astronomers have discovered that the nearby star Epsilon Eridani has two rocky asteroid belts and an outer icy ring, making it a triple-ring system. The inner asteroid belt is a virtual twin of the belt in our solar system, while the outer asteroid belt holds 20 times more material. Moreover, the presence of these three rings of material implies... view more... (2008-10-28)
Tree rings show elevated tungsten coincides with Nevada leukemia cluster
Tungsten began increasing in trees in Fallon, Nev. several years before the town's rise in childhood leukemia cases, according to a new research report. view more (2007-05-01)
New observations show dynamic particle clumps in Saturn's A ring
New observations from the Cassini spacecraft now at Saturn indicate the particles comprising one of its most prominent rings are trapped in ever-changing clusters of debris that are regularly torn apart and reassembled by gravitational forces from the planet. view more (2005-09-06)
Using satellite observations to study photosynthetic trends in northern circumpolar high latitudes
Using time series analyses of a 22-year record of satellite observations across the northern circumpolar high latitudes, scientists at the Woods Hole Research Center are assessing trends in vegetation photosynthetic activity. view more (2006-05-18)
FSU biologist says new dinosaur is oldest cousin of Tyrannosaurus rex
Tyrannosaurus rex, meet your newest -- oldest -- cousin. Florida State University paleobiologist Gregory M. Erickson sliced up some ancient dinosaur bones uncovered in China to help an international team of scientists identify a new genus and species. view more (2006-02-10)
The least sea ice in 800 years
New research, which reconstructs the extent of ice in the sea between Greenland and Svalbard from the 13th century to the present indicates that there has never been so little sea ice as there is now. The research results from the Niels Bohr Institute, among others, are published in the scientific journal, Climate Dynamics. view more (2009-07-01)
Communication within the immune system:Immune synapses cannot function without ZAP-70
A familial form of severe combined immune deficiency (SCID) is caused by anomalies of an enzyme called ZAP-70. If ZAP-70 is lacking or does not work, the T-cells, which play a key role in the mechanisms of immune defense, are no longer functional. Affected children therefore catch infections as soon as they are exposed to pathogenic... view more... (2002-10-24)
New Cassini image shows "A" ring contains more debris than once thought
Views of Saturn's stunning ring system from above by the Cassini-Huygens spacecraft now orbiting the planet indicate the prominent A ring contains more debris than once thought, according to a new University of Colorado at Boulder study. view more (2006-04-07)
What happens when ice melts?
How molecules are linked together to form liquid water is the subject of a groundbreaking study due to appear Thursday, Apr. 1 in Science magazine's advance publication web site Science Express. The investigation entitled The Structure of the First Coordination Shell in Liquid Water summarizes the results of an international collaboration headed... view more... (2004-04-02)
New study links Western wildfires to Atlantic Ocean surface temperatures
Western U.S. wildfires are likely to increase in the coming decades, according to a new tree-ring study led by the University of Comahue in Argentina and involving the University of Colorado at Boulder that links episodic fire outbreaks in the past five centuries with periods of warming sea surface temperatures in the North Atlantic. view more (2006-12-27)
Blast From the Past: the `Minoan` eruption of Santorini (Thera) @ the London `Catastrophes` conference
The mid-second millennium `Minoan` eruption of Santorini (Thera) was one of the largest volcanic eruptions known to have occurred during the Holocene. It is also one of the most controversial, with the eruption being blamed for many far-reaching environmental and societal events, most notably the end of the Minoan civilisation on Crete. view more (2002-08-17)
The gold standard: Biodesign Institute researchers use nanoparticles to make 3-D DNA nanotubes
Arizona State University researchers Hao Yan and Yan Liu imagine and assemble intricate structures on a scale almost unfathomably small. Their medium is the double-helical DNA molecule, a versatile building material offering near limitless construction potential. view more (2009-01-05)
Childhood Diarrhoea May Permanently Affect IQ
NEWS Childhood Diarrhoea may permanently affect IQ Persistent diarrhoea in childhood can affect IQ, up to 10 years later and possibly longer, reports Marina Murphy in this issue of Chemistry & Industry Magazine. The report explains the work of US doctor Richard Guerrant who found that total days of diarrhoea in the first years of life is... view more... (2003-12-11)
Mysterious rock markings discovery baffles archaeologists
THE discovery of a series of mysterious rock carvings has sparked a quest among experts to find out exactly what they are. Archaeologists from the University of Newcastle upon Tyne, who were alerted to the carvings by a local farm-hand, are baffled as to what they mean or who created them. Fellow experts they have consulted, from bodies like... view more... (2003-10-09)
ESA scientist discovers a way to shortlist stars that might have planets
Markus Landgraf of the European Space Agency and colleagues (*) have found the first direct evidence that a bright disc of dust surrounds our Solar System, starting beyond the orbit of Saturn. Remarkably, their discovery gives astronomers a way to determine which other stars in the Galaxy are most likely to harbour planets and allows mission... view more... (2002-02-15)
NASA's Swift, Fermi Probe Fireworks From a Flaring Gamma-Ray Star
Astronomers using NASA's Swift satellite and Fermi Gamma-ray Space Telescope are seeing frequent blasts from a stellar remnant 30,000 light-years away. view more (2009-02-11)
Structural basis for photoswitching in fluorescent proteins brought into focus
University of Oregon scientists have identified molecular features that determine the light-emitting ability green fluorescent proteins, and by strategically inserting a single oxygen atom they were able to keep the lights turned off for up to 65 hours. view more (2007-04-11)
Crash Test-Iconic Rings and Flares of Galaxies Created by Violent, Intergalactic Collisions, Research by Pitt and Partners Finds
The bright pinwheels and broad star sweeps iconic of disk galaxies such as the Milky Way might all be the shrapnel from massive, violent collisions with other galaxies and galaxy-size chunks of dark matter, according to a multi-institutional project involving the University of Pittsburgh. view more (2008-11-24)
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