03/15/2006 08:00:00
Robert Tindol
Astronomers have discovered a narrow stream of stars extending at least 45 degrees across the northern sky. The stream is about 76,000 light-years distant from Earth and forms a giant arc over the disk of the Milky Way galaxy.
 
03/15/2006 08:00:00
Robert Tindol
In a new development in nanotechnology, a researcher at the California Institute of Technology has devised a way of weaving DNA strands into any desired two-dimensional shape or figure, which he calls "DNA origami."
 
03/09/2006 08:00:00
Robert Tindol
Biologists in recent years have identified every individual gene in the genomes of several organisms. While this has been quite an accomplishment in itself, the further goal of figuring out how these genes interact is truly daunting.
 
03/09/2006 08:00:00
Robert Tindol
Molecular biologists have known for some time that there is a so-called checkpoint control mechanism that keeps our cells from dividing until they have copied all the DNA in their genetic code. Similar mechanisms prevent cells from dividing with damaged DNA, which forms, for example, in one's skin after a sunburn. Without such genetic fidelity mechanisms, cells would divide with missing or defective genes.
 
03/02/2006 08:00:00
Robert Tindol
Your emotions can easily be read by others when you blush—at least by others familiar with your skin color. What's more, the blood rushing out of your face when you're terrified is just as telling. And when it comes to our evolutionary cousins the chimpanzees, they not only can see color changes in each other's faces, but in each other's rumps as well.
 
03/01/2006 08:00:00
Robert Tindol
The Sumatra-Andaman earthquake of December 26, 2004, was one of the worst natural disasters in recent memory, mostly on account of the devastating tsunami that followed it. A group of geologists and geophysicists, including scientists at the California Institute of Technology, has delineated the full dimensions of the fault rupture that caused the earthquake.
 
02/27/2006 08:00:00
Robert Tindol
For the last decade, astronomers have thought that the Andromeda galaxy, our nearest galactic neighbor, was rather different from the Milky Way. But a group of researchers have determined that the two galaxies are probably quite similar in the way they evolved, at least over their first several billion years.
 
01/18/2006 08:00:00
Robert Tindol
In a new study that provides a novel way of looking at our solar system's past, a group of planetary scientists and geochemists announce that they have found evidence on Earth of an asteroid breakup or collision that occurred 8.2 million years ago.
 
01/18/2006 08:00:00
Astrophysicists spend most of their time looking for objects in the sky, but 9/11 changed Ryan McLean's orientation.
 
01/11/2006 08:00:00
Robert Tindol

A team of astronomers has uncovered new evidence about the stars whose formation ended the cosmic "Dark Ages" a few hundred million years after the Big Bang.

 

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