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Scientists in North Carolina say they have identified a gene that affects IQ, a finding that, if confirmed, would be a significant step toward understanding the genetic basis for intelligence.
Cannabis almost doubles the risk of fatal car crashes, according to a new study, though smoking the drug is still far less risky than drink-driving, the researchers say.
Stoned drivers were almost twice as likely to be involved in a fatal car crashes than abstemious drivers, according to a study of 10,748 fatal car crashes in France between 2001 and 2003. More than half of the drivers in the study themselves died as a result of their accidents and all the subjects were tested for drug and alcohol use after crashing.
Coffee improves short-term memory and speeds up reaction times by acting on the brain’s prefrontal cortex, according to a new study.
Researchers used functional magnetic resonance imaging (fMRI) to determine how coffee activates different areas of the brain in 15 volunteers.
“Caffeine modulates a higher brain function through its effects on distinct areas of the brain,” explains Florian Koppelstätter, who carried out the research with colleagues at the Medical University at Innsbruck, Austria.
The ocean current that gives western Europe its relatively balmy climate is stuttering, raising fears that it might fail entirely and plunge the continent into a mini ice age.
The dramatic finding comes from a study of ocean circulation in the North Atlantic, which found a 30% reduction in the warm currents that carry water north from the Gulf Stream.
The slow-down, which has long been predicted as a possible consequence of global warming, will give renewed urgency to intergovernmental talks in Montreal, Canada, this week on a successor to the Kyoto Protocol.
DISTRIBUTED computing experiment SETI@home will be switched off on December 15 as it becomes part of the Berkeley Open Infrastructure for Network Computing (BOINC).
BOINC has been developed at UC Berkeley as a framework for volunteer computing projects like SETI@home. The workunit totals of users and teams will be frozen at that point, and the final totals will be available on the web.