In the News
Abnormal Lung Cancer Screening Results May Help Smokers Quit
According to a new study, smokers who receive multiple abnormal results using computed tomography (CT) to screen for lung cancer are more likely to quit, suggesting an opportunity for doctors to motivate smokers to quit smoking. Neurotransmitter Orexin Associated With Pleasure And Reward Pathways I
Researchers at the University of Pennsylvania School of Medicine have discovered that the recently identified neurotransmitter orexin (also known as hypocretin) influences reward processing by activating neurons in the lateral hypothalamus region of the brain. By identifying the relationship between orexin neurons and behaviors associated with reward seeking, drug relapse, and addiction, researchers hope to find new treatments for drug addiction. Genetically Altered Cells May Help Artificial Skin Fight Infection
Cincinnati burn researchers have created genetically modified skin cells that, when added to cultured skin substitutes, may help fight off potentially lethal infections in patients with severe burns. Led by University of Cincinnati scientists, the team found that skin cells that were genetically altered to produce higher levels of a protein known as human beta defensin 4 killed more bacteria than normal skin cells. Herb Caen ...
Information and selected columns from Pulitzer Prize-winning "three dot"journalist Herb Caen, who wrote columns for the San Francisco Chronicle and San Francisco Examiner newspapers from the 1930s until his death in 1997. The site features milestones in Caen's life, vintage columns (including a 1958 article in which he coined the term "beatnik"), a searchable archive of articles from 1995 and 1996, and a photo gallery. From the Web site for the San Francisco Chronicle. Silicone Cleavage Bounces Back
Recent Canadian approval for silicone implants could signal a green light soon in the United States for devices banned for more than a decade because of health concerns. By Kristen Philipkoski. Air Pressure Matters When Landing On Sandy Planets
A steel ball dropped into loose, fine sand makes an impressive splash, according to physicists of the Physics of Fluids group investigating the fluid-like properties of sand at the University of Twente in the Netherlands. Greenhouse Gas Burial: Storing Unwanted Carbon Dioxide In Unmineable C
Deep coal seams that are not commercially viable for coal production could be used for permanent underground storage of carbon dioxide generated by human activities, thus avoiding atmospheric release, according to two studies published in the Journal of Environment and Pollution. An added benefit of storing carbon dioxide in this way is that additional useful methane will be displaced from the coal beds. Velvet Worm Brains Reveal Secret Sisterhood With Spiders
Velvet worms, living fossils that look like a child's rendition of caterpillars, are more closely related to spiders and scorpions than to butterflies, according to new research. Known to scientists as onychophorans, velvet worms have been thought to be similar to the ancestors of modern arthropods, the jointed-legged creatures that includes insects. Fossils that look very much like today's onychophorans can be found in rocks 540 million years old. Hacking a 2,000-Year-Old Computer
The Antikythera Mechanism, an ancient device that's baffled scientists for a century, finally yields its secrets. In Gear Factor. Suffering Under a Great Injustice: Ansel Adams's Photographs of Japane
In 1943, Ansel Adams documented the Manzanar War Relocation Center in California and the Japanese Americans interned there. This site provides side-by-side digital scans of both Adams' 242 original negatives and his 209 photographic prints, collection highlights, Adams' book "Born Free and Equal,"a selected bibliography, and a chronology of Adams' life. From the American Memory Project of the Library of Congress.
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