Wednesday, November 18, 2009
Tuesday, November 17, 2009
Sunday, November 15, 2009
Saturday, November 14, 2009
Friday, November 13, 2009
NASA Reproduces a Building Block of Life in Laboratory
NASA scientists studying the origin of life have reproduced uracil, a key component of our hereditary material, in the laboratory. They discovered that an ice sample containing pyrimidine exposed to ultraviolet radiation under space-like conditions produces this essential ingredient of life.
Pyrimidine is a ring-shaped molecule made up of carbon and nitrogen and is the basic structure for uracil, part of a genetic code found in ribonucleic acid (RNA). RNA is central to protein synthesis, but has many other roles.
"We have demonstrated for the first time that we can make uracil, a component of RNA, non-biologically in a laboratory under conditions found in space," said Michel Nuevo, research scientist at NASA's Ames Research Center, Moffett Field, Calif. "We are showing that these laboratory processes, which simulate occurrences in outer space, can make a fundamental building block used by living organisms on Earth."
http://www.nasa.gov/topics/technology/features/uracil.html
Pyrimidine is a ring-shaped molecule made up of carbon and nitrogen and is the basic structure for uracil, part of a genetic code found in ribonucleic acid (RNA). RNA is central to protein synthesis, but has many other roles.
"We have demonstrated for the first time that we can make uracil, a component of RNA, non-biologically in a laboratory under conditions found in space," said Michel Nuevo, research scientist at NASA's Ames Research Center, Moffett Field, Calif. "We are showing that these laboratory processes, which simulate occurrences in outer space, can make a fundamental building block used by living organisms on Earth."
http://www.nasa.gov/topics/technology/features/uracil.html
Galactic Center
In celebration of the International Year of Astronomy 2009, NASA's Great Observatories — the Hubble Space Telescope, the Spitzer Space Telescope, and the Chandra X-ray Observatory — have collaborated to produce an unprecedented image of the central region of our Milky Way galaxy.
In this spectacular image, observations using infrared light and X-ray light see through the obscuring dust and reveal the intense activity near the galactic core. Note that the center of the galaxy is located within the bright white region to the right of and just below the middle of the image. The entire image width covers about one-half a degree, about the same angular width as the full moon.
Each telescope's contribution is presented in a different color:
- Yellow represents the near-infrared observations of Hubble. These observations outline the energetic regions where stars are being born as well as reveal hundreds of thousands of stars.
- Red represents the infrared observations of Spitzer. The radiation and winds from stars create glowing dust clouds that exhibit complex structures from compact, spherical globules to long, stringy filaments.
- Blue and violet represent the X-ray observations of Chandra. X-rays are emitted by gas heated to millions of degrees by stellar explosions and by outflows from the supermassive black hole in the galaxy's center. The bright blue blob on the left side is emission from a double star system containing either a neutron star or a black hole.
When these views are brought together, this composite image provides one of the most detailed views ever of our galaxy's mysterious core.
Art drawn with Eye movement
The EyeWriter project is an ongoing collaborative research effort to empower people, who are suffering from ALS, with creative technologies.
It is a low-cost eye-tracking apparatus & custom software that allows graffiti writers and artists with paralysis resulting from Amyotrophic lateral sclerosis to draw using only their eyes.
Tuesday, November 10, 2009
Monday, November 2, 2009
Sunday, November 1, 2009
History of the synthetic H1N1 flu virus
The history of the extraction of the genetic material from the corpses of victims of the 1918 Spanish influenza virus who were buried in Arctic permafrost is part "X-Files" and part "Jurassic Park." After an unsuccessful 1951 mission, that involved U.S. biological warfare specialists, to extract 1918 Spanish flu genetic material in 1951 from a cemetery in the Inupiat Eskimo village of Brevig Mission, Alaska, scientists made another attempt, a successful one it turns out, in 1997. Dr. Johan Hultin, from the State University of Iowa, successfully extracted genetic material from the corpse of an obese thirty-something female who died from the Spanish flu in 1918, along with 85 percent of Brevig Mission's (called Teller Mission in 1918) villagers in a single week. The pandemic killed at least 50 million people around the world.
Once the Spanish flu genetic material was obtained from the lungs, spleen, liver, and heart of the Eskimo woman's corpse, scientists, in a scene reminiscent of the fictional movie "Jurassic Park," in which genetic material from extinct dinosaurs is used to bring the creatures back to life, recreated the long-since dead 1918 Spanish flu in a U.S.-government funded laboratory. The woman's organs were cut into one-inch cubes and shipped to the Armed Forces Institute of Pathology in Rockville, Maryland where the virus's genetic RNA material was identified and the 1918 Spanish flu was successfully brought back to life.
The search for the frozen bodies of 1918 flu victims was not limited to Alaska. Another team of scientists, acting like Dr. Frankenstein's "Igor," set out to dig up the graves of miners who died from the flu in the remote Norwegian mining village of Longyearbyen in Spitsbergen, which lies north of the Arctic Circle.
WMR has learned from a research scientist who has been working on the recreation of the 1918 flu that the genetic material has been re-engineered to synthetically create what is now known as the A/H1N1 virus, or as the Centers for Disease Control (CDC) calls it, the "novel flu."
Once the Spanish flu genetic material was obtained from the lungs, spleen, liver, and heart of the Eskimo woman's corpse, scientists, in a scene reminiscent of the fictional movie "Jurassic Park," in which genetic material from extinct dinosaurs is used to bring the creatures back to life, recreated the long-since dead 1918 Spanish flu in a U.S.-government funded laboratory. The woman's organs were cut into one-inch cubes and shipped to the Armed Forces Institute of Pathology in Rockville, Maryland where the virus's genetic RNA material was identified and the 1918 Spanish flu was successfully brought back to life.
The search for the frozen bodies of 1918 flu victims was not limited to Alaska. Another team of scientists, acting like Dr. Frankenstein's "Igor," set out to dig up the graves of miners who died from the flu in the remote Norwegian mining village of Longyearbyen in Spitsbergen, which lies north of the Arctic Circle.
WMR has learned from a research scientist who has been working on the recreation of the 1918 flu that the genetic material has been re-engineered to synthetically create what is now known as the A/H1N1 virus, or as the Centers for Disease Control (CDC) calls it, the "novel flu."
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