| What will it take to produce 'A Sea Change' in public opinion on ocean acidification? How do you make a movie about changes to the ocean's chemistry ? See here: [More] rss.sciam.com |
Putting Madness in Its Place: Can the Environment Explain Schizophrenia's Hereditary Patterns? Schizophrenia hides its heritability well. Although fewer than 1 percent of the general population will be diagnosed as schizophrenic based on symptoms such as hallucination and disorganized thought, for children of a schizophrenic parent, those odds jump to about one in 10. And yet the condition’s genetic underpinnings have stubbornly resisted discovery. In the latest attempt, three crack teams of investigators pooled genomic data from 8,000 schizophrenics of European ancestry but could lay claim to only a handful of weak genetic risk markers.Analyses such as these, which appeared online July 1 in Nature ( Scientific American is part of the Nature Publishing Group), have led researchers to question the value of brute-force genomics for analyzing schizophrenia. “I think we need to pause and think through the risk pathways to disease more clearly,” says Dolores Malaspina, director of the social and psychiatric initiatives program at New York University Langone Medical Center. In particular, devotees of genetics might want to cede a little ground to their colleagues in epidemiology, who over the past decade have amassed a provocative, interlocking set of studies implicating urban birthplace and migrant status as persistent risk factors. [More] rss.sciam.com |
Readers Respond on "Squeezing More Oil from the Ground" End or No End? In “ Squeezing More Oil from the Ground ,” Leonardo Maugeri, director of strategies and development of an international oil company, expresses the conventional view of his profession, assuming a world of near-infinite oil resources to be produced under market forces. Maugeri is particularly dismissive of our Scientific American article “The End of Cheap Oil” [March 1998]. It is difficult to find fault with at least its title, considering that the average price of oil over the preceding 10 years was $28 a barrel but rose to $45 over the ensuing decade to reach a peak of almost $150 in 2008. [More] rss.sciam.com |
One Person's Trash Is Another's Technology: Recycling or Donating Discarded Electronic Equipment Help Reduce E-Waste Pollution Dear EarthTalk: I work for an office equipment company selling copiers, fax machines, computers and printers. Each year new models come out making old ones obsolete. As a result, we have loads of trade-ins with nowhere to go. What can we do with this old equipment? --Jeff P., Worcester, Mass. [More] rss.sciam.com |
How to Restore the Florida Panther: Add a Little Texas Cougar [Slide Show] A relatively small stretch of swamp between Miami and Naples in south Florida was the only place on Earth where the Florida panther lived 20 years ago. In fact, scientists estimate that only roughly 26 of the animals that once roamed the entire Southeast remained in that swamp, many stunted by genetic defects brought on by inbreeding. In a bid to stave off the same kind of extinction that had wiped out all other mountain lion subspecies (also known as cougars, panthers or pumas) east of the Mississippi, wildlife managers imported eight female cougars from Texas in 1995. It worked. Today, the vigor of the Florida panther is back, according to a new genetic survey published September 23 in Science . [More] Florida - United States - Mississippi - Miami - Cougar rss.sciam.com |