Science & Technology

Josh Smith compares tooth measurements of unidentified dinosaur species with those of known *Tyrannosaurus* specimens.A paleontologist at WUSTL has concocted a mathematical scheme for identifying dinosaurs based upon measurements of their copious Mesozoic dental droppings. His method could help paleobiologists identify and reconstruct the lives of the creatures that roamed terra firma many millions of years ago.

Allison Miller discusses jocotes with a man in southern Honduras.Researchers at Washington University in St. Louis report that farmers and families in Central America have saved genetic variation in the jocote (ho-CO-tay), (Spondias purpurea), a small tree that bears fruit similar to a tiny mango. And they’ve done this by taking the plants out of the forest, their wild habitat, and growing them close to home for family and local consumption Allison Miller, Ph.D., a post-doctoral researcher at the University of Colorado, and former graduate student in Arts & Sciences at Washington University, and Spencer T. Olin Professor of Biology Barbara Schaal, Ph.D., from Washington University, in conjunction with Peter Raven, Ph.D. Engelmann Professor of Botany at Washington University and Director of the Missouri Botanical Garden, have shown multiple domestications of the jocote in Central America in the midst of large-scale deforestation, a practice that endangers genetic diversity .

Storing hydrogen is problematic. A WUSTL chemist and his colleagues are exploring different approaches to help make hydrogen fuel more practical.A chemist at Washington University in St. Louis hopes to find the right stuff to put the element hydrogen in a sticky situation. Lev Gelb is exploring several different ways to store hydrogen and prepares theoretical models of molecules that could enable storage and transport of hydrogen gas. One process would involve materials that hydrogen would stick to.

Tasks requiring shifting of attention, like driving a car while conversing with a passenger, may be challenging for people in very early stages of Alzheimer’s disease.People in early stages of Alzheimer’s disease have greater difficulty shifting attention back and forth between competing sources of information, a finding that offers new support for theories that contend breakdowns in attention play an important role in onset of the disease. Published in a recent issue of the journal Neuropsychology, the study suggests that subtle breakdowns in attention may offer one of the earliest reliable clues that a patient is grappling with early symptoms of Alzheimer’s-related dementia.

Sonograms show mouse tune.Research by Timothy Holy showing that mice sing in the presence of mates was picked up by news organizations around the globe. Click here to see a sampling of the media coverage.

Remembering Einstein’s “miracle year.”The United Nations has declared 2005 the International Year of Physics — and there’s a very good reason why this particular year was chosen to raise worldwide public awareness of physics. It is also the 100th anniversary of physicist Albert Einstein’s miraculous year in which he wrote five — or three depending on whom you ask — of his most famous scientific papers. Also known as the World Year of Physics, 2005 will feature worldwide events of interest not only to physicists, but also to the general public. Two physicists from Washington University in St. Louis who are both known for their ability to speak and write clearly about physics to the layperson will be giving talks throughout 2005 about Einstein’s ideas and their impact on science and society 100 years later.

Scientists have known for decades that female lab mice or their pheromones cause male lab mice to make ultrasonic vocalizations. But a new paper from researchers at the School of Medicine establishes for the first time that the utterances of the male mice are songs.

TeitelbaumSteven Teitelbaum, professor of pathology and immunology, was one of several experts invited to testify before a Senate Appropriations subcommittee, chaired by Senator Arlen Specter, regarding the benefits of stem cell research. Read Teitelbaum’s testimony here.

Richard Burkhardt will examine the scientific, social and political aspects in the development of ethology as a modern science in his Thomas Hall Lecture at 4 p.m. on October 25. He teaches history at the University of Illinois at Urbana-Champaign and specializes in the history of evolutionary theory and ethology, which is the study of animal behavior by means of comparative zoological methods.

Designed to bring together great scientific minds in a comfortable, productive atmosphere, the Farrell Learning and Teaching Center became the new focal point at the School of Medicine in August. Read more about the $35 million state-of-the-art facility in the following St. Louis Post-Dispatch article.