Monthly Archives: April 2004

An international team of researchers refutes the controversial theory that the AIDS virus, HIV-1, jumped into humans from contaminated polio vaccines. Proponents of the theory stated that a group of chimpanzees from the Kisangani region in the Democratic Republic of … Continue reading →

Brain-imaging studies show that effective teaching can make the brains of poor readers function like those of fluent readers. Bennett Shaywitz of Yale University and his colleagues report in the May 1 issue of Biological Psychiatry that they scanned the … Continue reading →

Girl chimps learn faster than boy chimps, according to a new study with human parallels appearing in the April 15 Nature. Elizabeth Lonsdorf of the University of Minnesota and colleagues studied how young, wild chimpanzees in Gombe National Park in … Continue reading →

Not only are we as a nation getting fatter, but it also appears that, in contrast to other countries, we’ve stopped growing taller. John Komlos of the University of Munich analyzed more than 200 years’ worth of data on height … Continue reading →

The sensation of fat in the mouth activates the reward centers of the brain, report British researchers in the March 24 Journal of Neuroscience in a finding that sheds light on why high-calorie foods are so appealing and might lead … Continue reading →

Researchers believe they have found the remains of the earliest known pet cat. Jean-Denis Vigne of the CNRS-Museum National d’Histoire Naturelle in Paris and colleagues report in the April 9 Science that they have discovered a human and a cat … Continue reading →

To mice and men, add the common lab rat to the creatures whose genomes — or genetic blueprints — have been sequenced and decoded. A large international team of researchers known as the Rat Genome Sequencing Project Consortium reported their … Continue reading →

Perhaps people should start blaming their brains instead of their diets for their weight. A hormone, leptin, known to control appetite, appears also to rewire the brain’s weight-regulation centers in early life, researchers from Oregon Health and Science University report … Continue reading →